diff --git a/app/services/merge_requests/close_service.rb b/app/services/merge_requests/close_service.rb
index 867e8221e5e01fd0a6af4b61e30d485f874562b1..62928e05a8995b018493c07eedcc444c7501ea90 100644
--- a/app/services/merge_requests/close_service.rb
+++ b/app/services/merge_requests/close_service.rb
@@ -51,4 +51,4 @@ def trigger_merge_request_merge_status_updated(merge_request)
   end
 end
 
-MergeRequests::CloseService.prepend_mod_with('MergeRequests::CloseService')
+MergeRequests::CloseService.prepend_mod
diff --git a/app/services/merge_requests/reopen_service.rb b/app/services/merge_requests/reopen_service.rb
index d2247a6d4c110b35fd7744f3c846f6359b633a55..b2e15cc7c7e442a46971db7d012975f654d80d09 100644
--- a/app/services/merge_requests/reopen_service.rb
+++ b/app/services/merge_requests/reopen_service.rb
@@ -37,3 +37,5 @@ def create_event(merge_request)
     end
   end
 end
+
+MergeRequests::ReopenService.prepend_mod
diff --git a/ee/app/services/ee/merge_requests/after_create_service.rb b/ee/app/services/ee/merge_requests/after_create_service.rb
index feaf0b76b2f48daf44a90030522fa5a462c56034..1ff370798aa0826a5a313d72344456089cce01be 100644
--- a/ee/app/services/ee/merge_requests/after_create_service.rb
+++ b/ee/app/services/ee/merge_requests/after_create_service.rb
@@ -9,6 +9,11 @@ module AfterCreateService
       def prepare_merge_request(merge_request)
         super
 
+        if current_user.project_bot?
+          log_audit_event(merge_request, 'merge_request_created_by_project_bot',
+            "Created merge request #{merge_request.title}")
+        end
+
         schedule_sync_for(merge_request)
         schedule_fetch_suggested_reviewers(merge_request)
       end
diff --git a/ee/app/services/ee/merge_requests/base_service.rb b/ee/app/services/ee/merge_requests/base_service.rb
index 40cc5231f28fd34c4445dbac742997fc3c10f1ad..e14892443e2bd734344f59cf78bb7f2fa3f9aa25 100644
--- a/ee/app/services/ee/merge_requests/base_service.rb
+++ b/ee/app/services/ee/merge_requests/base_service.rb
@@ -108,6 +108,27 @@ def capture_suggested_reviewers_accepted(merge_request)
         ::MergeRequests::CaptureSuggestedReviewersAcceptedWorker
           .perform_async(merge_request.id, suggested_reviewer_ids)
       end
+
+      def log_audit_event(merge_request, event_name, message)
+        audit_context = {
+          name: event_name,
+          author: current_user,
+          scope: merge_request.target_project,
+          target: merge_request,
+          message: message,
+          target_details:
+            { iid: merge_request.iid,
+              id: merge_request.id,
+              source_branch: merge_request.source_branch,
+              target_branch: merge_request.target_branch }
+        }
+
+        if event_name == 'merge_request_merged_by_project_bot'
+          audit_context[:target_details][:merge_commit_sha] = merge_request.merge_commit_sha
+        end
+
+        ::Gitlab::Audit::Auditor.audit(audit_context)
+      end
     end
   end
 end
diff --git a/ee/app/services/ee/merge_requests/close_service.rb b/ee/app/services/ee/merge_requests/close_service.rb
index 5721df914e5ea09bb580c78f1affb90e2952a8b5..92c681f351e156700b827e6f46312e90ac283fbe 100644
--- a/ee/app/services/ee/merge_requests/close_service.rb
+++ b/ee/app/services/ee/merge_requests/close_service.rb
@@ -3,6 +3,18 @@
 module EE
   module MergeRequests
     module CloseService
+      extend ::Gitlab::Utils::Override
+
+      override :execute
+      def execute(merge_request, commit = nil)
+        super.tap do
+          if current_user.project_bot?
+            log_audit_event(merge_request, 'merge_request_closed_by_project_bot',
+              "Closed merge request #{merge_request.title}")
+          end
+        end
+      end
+
       def expire_unapproved_key(merge_request)
         merge_request.approval_state.expire_unapproved_key!
       end
diff --git a/ee/app/services/ee/merge_requests/post_merge_service.rb b/ee/app/services/ee/merge_requests/post_merge_service.rb
index 6fac08150593365c6c33a1ef208a212a5864ab19..593827d15e2590078ca1776319aa793b21ad8d55 100644
--- a/ee/app/services/ee/merge_requests/post_merge_service.rb
+++ b/ee/app/services/ee/merge_requests/post_merge_service.rb
@@ -18,6 +18,12 @@ def execute(merge_request)
         merge_request.approval_state.expire_unapproved_key!
 
         audit_approval_rules(merge_request)
+
+        if current_user.project_bot?
+          log_audit_event(merge_request, 'merge_request_merged_by_project_bot',
+            "Merged merge request #{merge_request.title}")
+        end
+
         sync_security_scan_orchestration_policies(target_project)
         trigger_blocked_merge_requests_merge_status_updated(merge_request)
       end
diff --git a/ee/app/services/ee/merge_requests/reopen_service.rb b/ee/app/services/ee/merge_requests/reopen_service.rb
new file mode 100644
index 0000000000000000000000000000000000000000..58e624714292417750516885e756f74947f1892e
--- /dev/null
+++ b/ee/app/services/ee/merge_requests/reopen_service.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module EE
+  module MergeRequests
+    module ReopenService
+      extend ::Gitlab::Utils::Override
+
+      override :execute
+      def execute(merge_request)
+        super.tap do
+          if current_user.project_bot?
+            log_audit_event(merge_request, 'merge_request_reopened_by_project_bot',
+              "Reopened merge request #{merge_request.title}")
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/ee/app/services/ee/notes/post_process_service.rb b/ee/app/services/ee/notes/post_process_service.rb
index 7fe31806ccdf5df851711a49ba374c14511fc987..3c2a19cf897024c524dc5aa3399cbd8a39fd3865 100644
--- a/ee/app/services/ee/notes/post_process_service.rb
+++ b/ee/app/services/ee/notes/post_process_service.rb
@@ -11,6 +11,28 @@ def execute
         super
 
         ::Analytics::RefreshCommentsData.for_note(note)&.execute
+
+        log_audit_event if note.author.project_bot?
+      end
+
+      private
+
+      def log_audit_event
+        audit_context = {
+          name: 'comment_by_project_bot',
+          author: note.author,
+          scope: note.project,
+          target: note,
+          message: "Added comment: #{::Gitlab::UrlBuilder.note_url(note)}",
+          target_details: {
+            id: note.id,
+            noteable_type: note.noteable_type,
+            noteable_id: note.noteable_id
+          },
+          stream_only: true
+        }
+
+        ::Gitlab::Audit::Auditor.audit(audit_context)
       end
     end
   end
diff --git a/ee/config/audit_events/types/comment_by_project_bot.yml b/ee/config/audit_events/types/comment_by_project_bot.yml
new file mode 100644
index 0000000000000000000000000000000000000000..6e915a00b33a7292ed97036e2e23bde2e15b21e2
--- /dev/null
+++ b/ee/config/audit_events/types/comment_by_project_bot.yml
@@ -0,0 +1,9 @@
+---
+name: comment_by_project_bot
+description: Triggered when a comment is added to an issue or an MR using the project access token
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/323299
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120927
+feature_category: team_planning
+milestone: '16.1'
+saved_to_database: false
+streamed: true
diff --git a/ee/config/audit_events/types/merge_request_closed_by_project_bot.yml b/ee/config/audit_events/types/merge_request_closed_by_project_bot.yml
new file mode 100644
index 0000000000000000000000000000000000000000..95c3f7dd322ff065c4f303de8bd15694a748b377
--- /dev/null
+++ b/ee/config/audit_events/types/merge_request_closed_by_project_bot.yml
@@ -0,0 +1,9 @@
+---
+name: merge_request_closed_by_project_bot
+description: Triggered when a merge request is closed using a project access token
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/323299
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120927
+feature_category: code_review_workflow
+milestone: '16.1'
+saved_to_database: true
+streamed: true
diff --git a/ee/config/audit_events/types/merge_request_created_by_project_bot.yml b/ee/config/audit_events/types/merge_request_created_by_project_bot.yml
new file mode 100644
index 0000000000000000000000000000000000000000..5c88538e9787a275568084c8d2c7eafeb5c46cc9
--- /dev/null
+++ b/ee/config/audit_events/types/merge_request_created_by_project_bot.yml
@@ -0,0 +1,9 @@
+---
+name: merge_request_created_by_project_bot
+description: Triggered when a merge request is created using a project access token
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/323299
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120927
+feature_category: code_review_workflow
+milestone: '16.1'
+saved_to_database: true
+streamed: true
diff --git a/ee/config/audit_events/types/merge_request_merged_by_project_bot.yml b/ee/config/audit_events/types/merge_request_merged_by_project_bot.yml
new file mode 100644
index 0000000000000000000000000000000000000000..2b2b0f9820edaaba8c829c9664a36bd51a52e2cb
--- /dev/null
+++ b/ee/config/audit_events/types/merge_request_merged_by_project_bot.yml
@@ -0,0 +1,9 @@
+---
+name: merge_request_merged_by_project_bot
+description: Triggered when a merge request is merged using a project access token
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/323299
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120927
+feature_category: code_review_workflow
+milestone: '16.1'
+saved_to_database: true
+streamed: true
diff --git a/ee/config/audit_events/types/merge_request_reopened_by_project_bot.yml b/ee/config/audit_events/types/merge_request_reopened_by_project_bot.yml
new file mode 100644
index 0000000000000000000000000000000000000000..bedbcc41dcdf2299273c7ab12c5c28ed676030ef
--- /dev/null
+++ b/ee/config/audit_events/types/merge_request_reopened_by_project_bot.yml
@@ -0,0 +1,9 @@
+---
+name: merge_request_reopened_by_project_bot
+description: Triggered when a merge request is reopened using a project access token
+introduced_by_issue: https://gitlab.com/gitlab-org/gitlab/-/issues/323299
+introduced_by_mr: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120927
+feature_category: code_review_workflow
+milestone: '16.1'
+saved_to_database: true
+streamed: true
diff --git a/ee/spec/services/ee/merge_requests/after_create_service_spec.rb b/ee/spec/services/ee/merge_requests/after_create_service_spec.rb
index 85f5f7b54efb49a186c91f61974010c5801acd5c..3760829c07eb5b2e7ca7df6dc6b62a036278980a 100644
--- a/ee/spec/services/ee/merge_requests/after_create_service_spec.rb
+++ b/ee/spec/services/ee/merge_requests/after_create_service_spec.rb
@@ -112,5 +112,36 @@
         end
       end
     end
+
+    context 'for audit events' do
+      let_it_be(:project_bot) { create(:user, :project_bot, email: "bot@example.com") }
+      let_it_be(:merge_request) { create(:merge_request, author: project_bot) }
+
+      include_examples 'audit event logging' do
+        let(:operation) { execute }
+        let(:event_type) { 'merge_request_created_by_project_bot' }
+        let(:fail_condition!) { expect(project_bot).to receive(:project_bot?).and_return(false) }
+        let(:attributes) do
+          {
+            author_id: project_bot.id,
+            entity_id: merge_request.target_project.id,
+            entity_type: 'Project',
+            details: {
+              author_name: project_bot.name,
+              target_id: merge_request.id,
+              target_type: 'MergeRequest',
+              target_details: {
+                iid: merge_request.iid,
+                id: merge_request.id,
+                source_branch: merge_request.source_branch,
+                target_branch: merge_request.target_branch
+              }.to_s,
+              author_class: project_bot.class.name,
+              custom_message: "Created merge request #{merge_request.title}"
+            }
+          }
+        end
+      end
+    end
   end
 end
diff --git a/ee/spec/services/ee/merge_requests/close_service_spec.rb b/ee/spec/services/ee/merge_requests/close_service_spec.rb
index 485e43040cec9be2c7f7e2bd5ccd04443ce1e386..44423fe01528d95c3b4a778dcc7cbb307a5c6ec0 100644
--- a/ee/spec/services/ee/merge_requests/close_service_spec.rb
+++ b/ee/spec/services/ee/merge_requests/close_service_spec.rb
@@ -48,5 +48,36 @@
         end
       end
     end
+
+    context 'for audit events' do
+      let_it_be(:project_bot) { create(:user, :project_bot, email: "bot@example.com") }
+      let_it_be(:merge_request) { create(:merge_request, author: project_bot) }
+
+      include_examples 'audit event logging' do
+        let(:operation) { service.execute(merge_request) }
+        let(:event_type) { 'merge_request_closed_by_project_bot' }
+        let(:fail_condition!) { expect(project_bot).to receive(:project_bot?).and_return(false) }
+        let(:attributes) do
+          {
+            author_id: project_bot.id,
+            entity_id: merge_request.target_project.id,
+            entity_type: 'Project',
+            details: {
+              author_name: project_bot.name,
+              target_id: merge_request.id,
+              target_type: 'MergeRequest',
+              target_details: {
+                iid: merge_request.iid,
+                id: merge_request.id,
+                source_branch: merge_request.source_branch,
+                target_branch: merge_request.target_branch
+              }.to_s,
+              author_class: project_bot.class.name,
+              custom_message: "Closed merge request #{merge_request.title}"
+            }
+          }
+        end
+      end
+    end
   end
 end
diff --git a/ee/spec/services/ee/merge_requests/post_merge_service_spec.rb b/ee/spec/services/ee/merge_requests/post_merge_service_spec.rb
index cd09ac1526af56a6a6b76ec7a94d1ddde0cd6095..290e721e687846ab94c5d2312dc84b9d72bdef1e 100644
--- a/ee/spec/services/ee/merge_requests/post_merge_service_spec.rb
+++ b/ee/spec/services/ee/merge_requests/post_merge_service_spec.rb
@@ -218,5 +218,37 @@
         expect(merge_request.approval_state.temporarily_unapproved?).to be_falsey
       end
     end
+
+    context 'for audit events' do
+      let_it_be(:project_bot) { create(:user, :project_bot, email: "bot@example.com") }
+      let_it_be(:merge_request) { create(:merge_request, author: project_bot) }
+
+      include_examples 'audit event logging' do
+        let(:operation) { subject }
+        let(:event_type) { 'merge_request_merged_by_project_bot' }
+        let(:fail_condition!) { expect(project_bot).to receive(:project_bot?).and_return(false) }
+        let(:attributes) do
+          {
+            author_id: project_bot.id,
+            entity_id: merge_request.target_project.id,
+            entity_type: 'Project',
+            details: {
+              author_name: project_bot.name,
+              target_id: merge_request.id,
+              target_type: 'MergeRequest',
+              target_details: {
+                iid: merge_request.iid,
+                id: merge_request.id,
+                source_branch: merge_request.source_branch,
+                target_branch: merge_request.target_branch,
+                merge_commit_sha: merge_request.merge_commit_sha
+              }.to_s,
+              author_class: project_bot.class.name,
+              custom_message: "Merged merge request #{merge_request.title}"
+            }
+          }
+        end
+      end
+    end
   end
 end
diff --git a/ee/spec/services/ee/merge_requests/reopen_service_spec.rb b/ee/spec/services/ee/merge_requests/reopen_service_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..4e25ee5a2969310f59b92793aedb7734425b4fe2
--- /dev/null
+++ b/ee/spec/services/ee/merge_requests/reopen_service_spec.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe MergeRequests::ReopenService, feature_category: :code_review_workflow do
+  describe '#execute' do
+    let_it_be(:merge_request) { create(:merge_request) }
+    let_it_be(:project) { merge_request.target_project }
+
+    let(:service_object) { described_class.new(project: project, current_user: merge_request.author) }
+
+    subject(:merge_request_reopen_service) { service_object.execute(merge_request) }
+
+    context 'for audit events' do
+      let_it_be(:project_bot) { create(:user, :project_bot, email: "bot@example.com") }
+      let_it_be(:merge_request) { create(:merge_request, author: project_bot) }
+
+      include_examples 'audit event logging' do
+        let(:operation) { merge_request_reopen_service }
+        let(:event_type) { 'merge_request_reopened_by_project_bot' }
+        let(:fail_condition!) { expect(project_bot).to receive(:project_bot?).and_return(false) }
+        let(:attributes) do
+          {
+            author_id: project_bot.id,
+            entity_id: merge_request.target_project.id,
+            entity_type: 'Project',
+            details: {
+              author_name: project_bot.name,
+              target_id: merge_request.id,
+              target_type: 'MergeRequest',
+              target_details: {
+                iid: merge_request.iid,
+                id: merge_request.id,
+                source_branch: merge_request.source_branch,
+                target_branch: merge_request.target_branch
+              }.to_s,
+              author_class: project_bot.class.name,
+              custom_message: "Reopened merge request #{merge_request.title}"
+            }
+          }
+        end
+      end
+    end
+  end
+end
diff --git a/ee/spec/services/ee/notes/post_process_service_spec.rb b/ee/spec/services/ee/notes/post_process_service_spec.rb
index e775ac3f7fa3589db3c4235e496a25d07ca3c606..c791f69c1ff45dc5a31c99eeab8eb2b16354e0dc 100644
--- a/ee/spec/services/ee/notes/post_process_service_spec.rb
+++ b/ee/spec/services/ee/notes/post_process_service_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Notes::PostProcessService do
+RSpec.describe Notes::PostProcessService, feature_category: :team_planning do
   describe '#execute' do
     context 'analytics' do
       subject { described_class.new(note) }
@@ -18,5 +18,41 @@
         subject.execute
       end
     end
+
+    context 'for audit events' do
+      subject(:notes_post_process_service) { described_class.new(note) }
+
+      context 'when note author is a project bot' do
+        let_it_be(:project_bot) { create(:user, :project_bot, email: "bot@example.com") }
+
+        let(:note) { create(:note, author: project_bot) }
+
+        it 'audits with correct name' do
+          expect(::Gitlab::Audit::Auditor).to receive(:audit).with(
+            hash_including(name: "comment_by_project_bot", stream_only: true)
+          ).and_call_original
+
+          notes_post_process_service.execute
+        end
+
+        it 'does not persist the audit event to database' do
+          expect { notes_post_process_service.execute }.not_to change { AuditEvent.count }
+        end
+      end
+
+      context 'when note author is not a project bot' do
+        let(:note) { create(:note) }
+
+        it 'does not invoke Gitlab::Audit::Auditor' do
+          expect(::Gitlab::Audit::Auditor).not_to receive(:audit)
+
+          notes_post_process_service.execute
+        end
+
+        it 'does not create an audit event' do
+          expect { notes_post_process_service.execute }.not_to change { AuditEvent.count }
+        end
+      end
+    end
   end
 end