diff --git a/app/assets/javascripts/discourse/app/controllers/review-index.js b/app/assets/javascripts/discourse/app/controllers/review-index.js
index 7ea2523e87e..e1e003870dc 100644
--- a/app/assets/javascripts/discourse/app/controllers/review-index.js
+++ b/app/assets/javascripts/discourse/app/controllers/review-index.js
@@ -11,6 +11,7 @@ export default Controller.extend({
     "category_id",
     "topic_id",
     "username",
+    "reviewed_by",
     "from_date",
     "to_date",
     "sort_order",
@@ -24,6 +25,7 @@ export default Controller.extend({
   topic_id: null,
   filtersExpanded: false,
   username: "",
+  reviewed_by: "",
   from_date: null,
   to_date: null,
   sort_order: null,
@@ -147,6 +149,7 @@ export default Controller.extend({
         status: this.filterStatus,
         category_id: this.filterCategoryId,
         username: this.filterUsername,
+        reviewed_by: this.filterReviewedBy,
         from_date: isPresent(this.filterFromDate)
           ? this.filterFromDate.toISOString(true).split("T")[0]
           : null,
diff --git a/app/assets/javascripts/discourse/app/routes/review-index.js b/app/assets/javascripts/discourse/app/routes/review-index.js
index 13d10724f2e..b4d15e68e1e 100644
--- a/app/assets/javascripts/discourse/app/routes/review-index.js
+++ b/app/assets/javascripts/discourse/app/routes/review-index.js
@@ -32,6 +32,7 @@ export default DiscourseRoute.extend({
       filterPriority: meta.priority,
       reviewableTypes: meta.reviewable_types,
       filterUsername: meta.username,
+      filterReviewedBy: meta.reviewed_by,
       filterFromDate: isPresent(meta.from_date) ? moment(meta.from_date) : null,
       filterToDate: isPresent(meta.to_date) ? moment(meta.to_date) : null,
       filterSortOrder: meta.sort_order,
diff --git a/app/assets/javascripts/discourse/app/templates/review-index.hbs b/app/assets/javascripts/discourse/app/templates/review-index.hbs
index c5a0fad8891..322ba824c21 100644
--- a/app/assets/javascripts/discourse/app/templates/review-index.hbs
+++ b/app/assets/javascripts/discourse/app/templates/review-index.hbs
@@ -58,6 +58,17 @@
         }}
       </div>
 
+      <div class="reviewable-filter topic-filter">
+        {{i18n "review.filtered_reviewed_by"}}
+        {{user-selector
+          excludeCurrentUser=false
+          usernames=filterReviewedBy
+          fullWidthWrap=true
+          single=true
+          class="user-selector"
+          canReceiveUpdates=true}}
+      </div>
+
       <div class="reviewable-filter topic-filter">
         {{i18n "review.filtered_user"}}
         {{user-selector
diff --git a/app/controllers/reviewables_controller.rb b/app/controllers/reviewables_controller.rb
index 65de25b429f..874a678c32a 100644
--- a/app/controllers/reviewables_controller.rb
+++ b/app/controllers/reviewables_controller.rb
@@ -30,7 +30,7 @@ class ReviewablesController < ApplicationController
       additional_filters: additional_filters.reject { |_, v| v.blank? }
     }
 
-    %i[priority username from_date to_date type sort_order].each do |filter_key|
+    %i[priority username reviewed_by from_date to_date type sort_order].each do |filter_key|
       filters[filter_key] = params[filter_key]
     end
 
diff --git a/app/models/reviewable.rb b/app/models/reviewable.rb
index c26efaedb4b..6adcb6ae422 100644
--- a/app/models/reviewable.rb
+++ b/app/models/reviewable.rb
@@ -437,6 +437,7 @@ class Reviewable < ActiveRecord::Base
     offset: nil,
     priority: nil,
     username: nil,
+    reviewed_by: nil,
     sort_order: nil,
     from_date: nil,
     to_date: nil,
@@ -470,6 +471,21 @@ class Reviewable < ActiveRecord::Base
     result = result.where("reviewables.created_at >= ?", from_date) if from_date
     result = result.where("reviewables.created_at <= ?", to_date) if to_date
 
+    if reviewed_by
+      reviewed_by_id = User.find_by_username(reviewed_by)&.id
+      return [] if reviewed_by_id.nil?
+
+      result = result.joins(<<~SQL
+        INNER JOIN(
+          SELECT reviewable_id
+          FROM reviewable_histories
+          WHERE reviewable_history_type = #{ReviewableHistory.types[:transitioned]} AND
+          status <> #{Reviewable.statuses[:pending]} AND created_by_id = #{reviewed_by_id}
+        ) AS rh ON rh.reviewable_id = reviewables.id
+      SQL
+      )
+    end
+
     if min_score > 0 && status == :pending
       result = result.where("reviewables.score >= ? OR reviewables.force_review", min_score)
     elsif min_score > 0
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 7a81c069845..b1fcd40bc91 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -457,6 +457,7 @@ en:
       topic: "Topic:"
       filtered_topic: "You have filtered to reviewable content in a single topic."
       filtered_user: "User"
+      filtered_reviewed_by: "Reviewed By"
       show_all_topics: "show all topics"
       deleted_post: "(post deleted)"
       deleted_user: "(user deleted)"
diff --git a/spec/models/reviewable_spec.rb b/spec/models/reviewable_spec.rb
index e5246ef05dd..2572da5e906 100644
--- a/spec/models/reviewable_spec.rb
+++ b/spec/models/reviewable_spec.rb
@@ -149,6 +149,18 @@ RSpec.describe Reviewable, type: :model do
           expect(reviewables).not_to include(qp)
         end
 
+        it 'can filter by who reviewed the flag' do
+          reviewable = Fabricate(:reviewable_flagged_post)
+          admin = Fabricate(:admin)
+          reviewable.perform(admin, :ignore)
+
+          reviewables = Reviewable.list_for(
+            user, status: :all, reviewed_by: admin.username
+          )
+
+          expect(reviewables).to contain_exactly(reviewable)
+        end
+
         it 'Does not filter by status when status parameter is set to all' do
           rejected_reviewable = Fabricate(:reviewable, target: post, status: Reviewable.statuses[:rejected])
           reviewables = Reviewable.list_for(user, status: :all)