diff --git a/CHANGELOG b/CHANGELOG
index b72ad5b4893..fe91044a593 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -89,6 +89,7 @@ v 8.12.0 (unreleased)
   - Fix repo title alignment (ClemMakesApps)
   - Change update interval of contacted_at
   - Fix branch title trailing space on hover (ClemMakesApps)
+  - Don't include 'Created By' tag line when importing from GitHub if there is a linked GitLab account (EspadaV8)
   - Award emoji tooltips containing more than 10 usernames are now truncated !4780 (jlogandavison)
   - Fix duplicate "me" in award emoji tooltip !5218 (jlogandavison)
   - Order award emoji tooltips in order they were added (EspadaV8)
diff --git a/lib/gitlab/github_import/base_formatter.rb b/lib/gitlab/github_import/base_formatter.rb
index d546e102c63..8cacf4f4925 100644
--- a/lib/gitlab/github_import/base_formatter.rb
+++ b/lib/gitlab/github_import/base_formatter.rb
@@ -20,6 +20,11 @@ module Gitlab
           find_by("identities.extern_uid = ? AND identities.provider = 'github'", github_id.to_s).
           try(:id)
       end
+
+      def gitlab_author_id
+        return @gitlab_author_id if defined?(@gitlab_author_id)
+        @gitlab_author_id = gitlab_user_id(raw_data.user.id)
+      end
     end
   end
 end
diff --git a/lib/gitlab/github_import/comment_formatter.rb b/lib/gitlab/github_import/comment_formatter.rb
index 1c7c1a73c77..2bddcde2b7c 100644
--- a/lib/gitlab/github_import/comment_formatter.rb
+++ b/lib/gitlab/github_import/comment_formatter.rb
@@ -21,7 +21,7 @@ module Gitlab
       end
 
       def author_id
-        gitlab_user_id(raw_data.user.id) || project.creator_id
+        gitlab_author_id || project.creator_id
       end
 
       def body
@@ -52,7 +52,11 @@ module Gitlab
       end
 
       def note
-        formatter.author_line(author) + body
+        if gitlab_author_id
+          body
+        else
+          formatter.author_line(author) + body
+        end
       end
 
       def type
diff --git a/lib/gitlab/github_import/issue_formatter.rb b/lib/gitlab/github_import/issue_formatter.rb
index ad4f1d8ae99..77621de9f4c 100644
--- a/lib/gitlab/github_import/issue_formatter.rb
+++ b/lib/gitlab/github_import/issue_formatter.rb
@@ -49,7 +49,7 @@ module Gitlab
       end
 
       def author_id
-        gitlab_user_id(raw_data.user.id) || project.creator_id
+        gitlab_author_id || project.creator_id
       end
 
       def body
@@ -57,7 +57,11 @@ module Gitlab
       end
 
       def description
-        @formatter.author_line(author) + body
+        if gitlab_author_id
+          body
+        else
+          formatter.author_line(author) + body
+        end
       end
 
       def milestone
diff --git a/lib/gitlab/github_import/pull_request_formatter.rb b/lib/gitlab/github_import/pull_request_formatter.rb
index 87e031b27f8..1408683100f 100644
--- a/lib/gitlab/github_import/pull_request_formatter.rb
+++ b/lib/gitlab/github_import/pull_request_formatter.rb
@@ -77,7 +77,7 @@ module Gitlab
       end
 
       def author_id
-        gitlab_user_id(raw_data.user.id) || project.creator_id
+        gitlab_author_id || project.creator_id
       end
 
       def body
@@ -85,7 +85,11 @@ module Gitlab
       end
 
       def description
-        formatter.author_line(author) + body
+        if gitlab_author_id
+          body
+        else
+          formatter.author_line(author) + body
+        end
       end
 
       def milestone
diff --git a/spec/lib/gitlab/github_import/comment_formatter_spec.rb b/spec/lib/gitlab/github_import/comment_formatter_spec.rb
index 9ae02a6c45f..c520a9c53ad 100644
--- a/spec/lib/gitlab/github_import/comment_formatter_spec.rb
+++ b/spec/lib/gitlab/github_import/comment_formatter_spec.rb
@@ -73,6 +73,12 @@ describe Gitlab::GithubImport::CommentFormatter, lib: true do
         gl_user = create(:omniauth_user, extern_uid: octocat.id, provider: 'github')
         expect(comment.attributes.fetch(:author_id)).to eq gl_user.id
       end
+
+      it 'returns note without created at tag line' do
+        create(:omniauth_user, extern_uid: octocat.id, provider: 'github')
+
+        expect(comment.attributes.fetch(:note)).to eq("I'm having a problem with this.")
+      end
     end
   end
 end
diff --git a/spec/lib/gitlab/github_import/issue_formatter_spec.rb b/spec/lib/gitlab/github_import/issue_formatter_spec.rb
index d60c4111e99..c2f1f6b91a1 100644
--- a/spec/lib/gitlab/github_import/issue_formatter_spec.rb
+++ b/spec/lib/gitlab/github_import/issue_formatter_spec.rb
@@ -109,6 +109,12 @@ describe Gitlab::GithubImport::IssueFormatter, lib: true do
 
         expect(issue.attributes.fetch(:author_id)).to eq gl_user.id
       end
+
+      it 'returns description without created at tag line' do
+        create(:omniauth_user, extern_uid: octocat.id, provider: 'github')
+
+        expect(issue.attributes.fetch(:description)).to eq("I'm having a problem with this.")
+      end
     end
   end
 
diff --git a/spec/lib/gitlab/github_import/pull_request_formatter_spec.rb b/spec/lib/gitlab/github_import/pull_request_formatter_spec.rb
index edfc6ad81c6..302f0fc0623 100644
--- a/spec/lib/gitlab/github_import/pull_request_formatter_spec.rb
+++ b/spec/lib/gitlab/github_import/pull_request_formatter_spec.rb
@@ -140,6 +140,12 @@ describe Gitlab::GithubImport::PullRequestFormatter, lib: true do
 
         expect(pull_request.attributes.fetch(:author_id)).to eq gl_user.id
       end
+
+      it 'returns description without created at tag line' do
+        create(:omniauth_user, extern_uid: octocat.id, provider: 'github')
+
+        expect(pull_request.attributes.fetch(:description)).to eq('Please pull these awesome changes')
+      end
     end
 
     context 'when it has a milestone' do