diff --git a/CHANGELOG b/CHANGELOG
index 74bc366d2037bbb093ae29d92af0e518760c8cee..08a9b8df4a0ff602b24ec4795e5d3082556cd9b1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -62,6 +62,7 @@ v 8.5.0 (unreleased)
   - Replaces "Create merge request" link with one to the "Merge Request" when one exists
   - Fix CI builds badge, add a new link to builds badge, deprecate the old one
   - Fix broken link to project in build notification emails
+  - Ability to see and sort on vote count from Issues and MR lists
 
 v 8.4.4
   - Update omniauth-saml gem to 1.4.2
diff --git a/app/assets/stylesheets/pages/issues.scss b/app/assets/stylesheets/pages/issues.scss
index 8694bd654a745485ab8add2044b2e40448d49417..1cc853dd4f582d1936e77d35774b1893e102c135 100644
--- a/app/assets/stylesheets/pages/issues.scss
+++ b/app/assets/stylesheets/pages/issues.scss
@@ -24,7 +24,7 @@
       display: inline-block;
     }
 
-    .issue-no-comments {
+    .issue-no-comments, .issue-no-votes {
       opacity: 0.5;
     }
   }
diff --git a/app/assets/stylesheets/pages/merge_requests.scss b/app/assets/stylesheets/pages/merge_requests.scss
index f033ff15f881194de18202f67a7d5024d4aac43e..6b497cd56edd45a1bb4ffb4b703df2225dfbe7fe 100644
--- a/app/assets/stylesheets/pages/merge_requests.scss
+++ b/app/assets/stylesheets/pages/merge_requests.scss
@@ -163,7 +163,7 @@
     display: inline-block;
   }
 
-  .merge-request-no-comments {
+  .merge-request-no-comments, .merge-request-no-votes {
     opacity: 0.5;
   }
 }
@@ -236,4 +236,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/app/helpers/sorting_helper.rb b/app/helpers/sorting_helper.rb
index 241179b0212b4522bae07a594c0d6e1d62e25326..f9026b887dadf819c6779742ebbf47f9974a1d9a 100644
--- a/app/helpers/sorting_helper.rb
+++ b/app/helpers/sorting_helper.rb
@@ -11,6 +11,8 @@ module SortingHelper
       sort_value_largest_repo => sort_title_largest_repo,
       sort_value_recently_signin => sort_title_recently_signin,
       sort_value_oldest_signin => sort_title_oldest_signin,
+      sort_value_downvotes => sort_title_downvotes,
+      sort_value_upvotes => sort_title_upvotes
     }
   end
 
@@ -54,6 +56,14 @@ module SortingHelper
     'Oldest sign in'
   end
 
+  def sort_title_downvotes
+    'Least popular'
+  end
+
+  def sort_title_upvotes
+    'Most popular'
+  end
+
   def sort_value_oldest_updated
     'updated_asc'
   end
@@ -93,4 +103,12 @@ module SortingHelper
   def sort_value_oldest_signin
     'oldest_sign_in'
   end
+
+  def sort_value_downvotes
+    'downvotes_desc'
+  end
+
+  def sort_value_upvotes
+    'upvotes_desc'
+  end
 end
diff --git a/app/models/concerns/issuable.rb b/app/models/concerns/issuable.rb
index 5136d0196a5f71f72c31b06ae5d2fe0811d2e5c8..e5f089fb8a0976a5e638e488c4df59c1f11b7814 100644
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -69,10 +69,35 @@ module Issuable
       case method.to_s
       when 'milestone_due_asc' then order_milestone_due_asc
       when 'milestone_due_desc' then order_milestone_due_desc
+      when 'downvotes_desc' then order_downvotes_desc
+      when 'upvotes_desc' then order_upvotes_desc
       else
         order_by(method)
       end
     end
+
+    def order_downvotes_desc
+      order_votes_desc('thumbsdown')
+    end
+
+    def order_upvotes_desc
+      order_votes_desc('thumbsup')
+    end
+
+    def order_votes_desc(award_emoji_name)
+      issuable_table = self.arel_table
+      note_table = Note.arel_table
+
+      join_clause = issuable_table.join(note_table, Arel::Nodes::OuterJoin).on(
+        note_table[:noteable_id].eq(issuable_table[:id]).and(
+          note_table[:noteable_type].eq(self.name).and(
+            note_table[:is_award].eq(true).and(note_table[:note].eq(award_emoji_name))
+          )
+        )
+      ).join_sources
+
+      joins(join_clause).group(issuable_table[:id]).reorder("COUNT(notes.id) DESC")
+    end
   end
 
   def today?
diff --git a/app/views/projects/issues/_issue.html.haml b/app/views/projects/issues/_issue.html.haml
index f9cf4910df3e11c7f5ed55c32c158c9d28168e85..5b0edcfa978e70eecb524a029f7744100620df88 100644
--- a/app/views/projects/issues/_issue.html.haml
+++ b/app/views/projects/issues/_issue.html.haml
@@ -15,6 +15,25 @@
         %li
           = link_to_member(@project, issue.assignee, name: false, title: "Assigned to :name")
 
+      - upvotes, downvotes = issue.upvotes, issue.downvotes
+      - if upvotes > 0 || downvotes > 0
+        %li
+          = icon('thumbs-up')
+          = upvotes
+      - else
+        %li{ class: 'issue-no-votes' }
+          = icon('thumbs-up')
+          = upvotes
+
+      - if upvotes > 0 || downvotes > 0
+        %li
+          = icon('thumbs-down')
+          = downvotes
+      - else
+        %li{ class: 'issue-no-votes' }
+          = icon('thumbs-down')
+          = downvotes
+
       - note_count = issue.notes.user.count
       - if note_count > 0
         %li
diff --git a/app/views/projects/merge_requests/_merge_request.html.haml b/app/views/projects/merge_requests/_merge_request.html.haml
index e25bf917b435f6cf26e2cf1a7346cc0b380ae2b1..b230b3a01102e007913c0eb7daa6458f8acab7c6 100644
--- a/app/views/projects/merge_requests/_merge_request.html.haml
+++ b/app/views/projects/merge_requests/_merge_request.html.haml
@@ -24,6 +24,25 @@
         %li
           = link_to_member(merge_request.source_project, merge_request.assignee, name: false, title: "Assigned to :name")
 
+      - upvotes, downvotes = merge_request.upvotes, merge_request.downvotes
+      - if upvotes > 0 || downvotes > 0
+        %li
+          = icon('thumbs-up')
+          = upvotes
+      - else
+        %li{ class: 'merge-request-no-votes' }
+          = icon('thumbs-up')
+          = upvotes
+
+      - if upvotes > 0 || downvotes > 0
+        %li
+          = icon('thumbs-down')
+          = downvotes
+      - else
+        %li{ class: 'merge-request-no-votes' }
+          = icon('thumbs-down')
+          = downvotes
+
       - note_count = merge_request.mr_and_commit_notes.user.count
       - if note_count > 0
         %li
diff --git a/app/views/shared/_sort_dropdown.html.haml b/app/views/shared/_sort_dropdown.html.haml
index f09ab25276da1d33263420e4ed8fca6e2c6d9758..e3a6a5a68b681a84ea62e7113579f72caef58b50 100644
--- a/app/views/shared/_sort_dropdown.html.haml
+++ b/app/views/shared/_sort_dropdown.html.haml
@@ -20,3 +20,7 @@
         = sort_title_milestone_soon
       = link_to page_filter_path(sort: sort_value_milestone_later) do
         = sort_title_milestone_later
+      = link_to page_filter_path(sort: sort_value_upvotes) do
+        = sort_title_upvotes
+      = link_to page_filter_path(sort: sort_value_downvotes) do
+        = sort_title_downvotes
diff --git a/features/project/issues/issues.feature b/features/project/issues/issues.feature
index ca2399d85a90e9e3c5783846b7b6a3fa0f09fc34..89af58dcef351c175a1e3ed527ec48b34360a910 100644
--- a/features/project/issues/issues.feature
+++ b/features/project/issues/issues.feature
@@ -88,6 +88,16 @@ Feature: Project Issues
     And I visit dashboard merge requests page
     Then The list should be sorted by "Oldest updated"
 
+  @javascript
+  Scenario: Sort issues by upvotes/downvotes
+    Given project "Shop" have "Bugfix" open issue
+    And issue "Release 0.4" have 2 upvotes and 1 downvote
+    And issue "Tweet control" have 1 upvote and 2 downvotes
+    And I sort the list by "Most popular"
+    Then The list should be sorted by "Most popular"
+    And I sort the list by "Least popular"
+    Then The list should be sorted by "Least popular"
+
   @javascript
   Scenario: I search issue
     Given I fill in issue search with "Re"
diff --git a/features/project/merge_requests.feature b/features/project/merge_requests.feature
index 5995e78796150668de6b7f39a11b503ac456347a..495f25f28e74164feec2ce5f3c430fdf4a9a74c8 100644
--- a/features/project/merge_requests.feature
+++ b/features/project/merge_requests.feature
@@ -107,6 +107,17 @@ Feature: Project Merge Requests
     And I visit dashboard merge requests page
     Then The list should be sorted by "Oldest updated"
 
+  @javascript
+  Scenario: Sort merge requests by upvotes/downvotes
+    Given project "Shop" have "Bug NS-05" open merge request with diffs inside
+    And project "Shop" have "Bug NS-06" open merge request
+    And merge request "Bug NS-04" have 2 upvotes and 1 downvote
+    And merge request "Bug NS-06" have 1 upvote and 2 downvotes
+    And I sort the list by "Most popular"
+    Then The list should be sorted by "Most popular"
+    And I sort the list by "Least popular"
+    Then The list should be sorted by "Least popular"
+
   @javascript
   Scenario: Visiting Merge Requests after commenting on diffs
     Given project "Shop" have "Bug NS-05" open merge request with diffs inside
diff --git a/features/steps/project/issues/issues.rb b/features/steps/project/issues/issues.rb
index 09a89e99831a6ddf5b94a59edb93d74555bd581f..54d64bacc52860c531a12658d8d28a9670c66f10 100644
--- a/features/steps/project/issues/issues.rb
+++ b/features/steps/project/issues/issues.rb
@@ -174,6 +174,13 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
            author: project.users.first)
   end
 
+  step 'project "Shop" have "Bugfix" open issue' do
+    create(:issue,
+           title: "Bugfix",
+           project: project,
+           author: project.users.first)
+  end
+
   step 'project "Shop" have "Release 0.3" closed issue' do
     create(:closed_issue,
            title: "Release 0.3",
@@ -181,6 +188,56 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
            author: project.users.first)
   end
 
+  step 'issue "Release 0.4" have 2 upvotes and 1 downvote' do
+    issue = Issue.find_by(title: 'Release 0.4')
+    create_list(:upvote_note, 2, project: project, noteable: issue)
+    create(:downvote_note, project: project, noteable: issue)
+  end
+
+  step 'issue "Tweet control" have 1 upvote and 2 downvotes' do
+    issue = Issue.find_by(title: 'Tweet control')
+    create(:upvote_note, project: project, noteable: issue)
+    create_list(:downvote_note, 2, project: project, noteable: issue)
+  end
+
+  step 'The list should be sorted by "Least popular"' do
+    page.within '.issues-list' do
+      page.within 'li.issue:nth-child(1)' do
+        expect(page).to have_content 'Tweet control'
+        expect(page).to have_content '1 2'
+      end
+
+      page.within 'li.issue:nth-child(2)' do
+        expect(page).to have_content 'Release 0.4'
+        expect(page).to have_content '2 1'
+      end
+
+      page.within 'li.issue:nth-child(3)' do
+        expect(page).to have_content 'Bugfix'
+        expect(page).to have_content '0 0'
+      end
+    end
+  end
+
+  step 'The list should be sorted by "Most popular"' do
+    page.within '.issues-list' do
+      page.within 'li.issue:nth-child(1)' do
+        expect(page).to have_content 'Release 0.4'
+        expect(page).to have_content '2 1'
+      end
+
+      page.within 'li.issue:nth-child(2)' do
+        expect(page).to have_content 'Tweet control'
+        expect(page).to have_content '1 2'
+      end
+
+      page.within 'li.issue:nth-child(3)' do
+        expect(page).to have_content 'Bugfix'
+        expect(page).to have_content '0 0'
+      end
+    end
+  end
+
   step 'empty project "Empty Project"' do
     create :empty_project, name: 'Empty Project', namespace: @user.namespace
   end
diff --git a/features/steps/project/merge_requests.rb b/features/steps/project/merge_requests.rb
index 337893e6209fa4bf7f55fd29a3cef13c4967a0b8..2160d8645fdc9921834eb51c113259d7b6585d94 100644
--- a/features/steps/project/merge_requests.rb
+++ b/features/steps/project/merge_requests.rb
@@ -138,6 +138,56 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
            author: project.users.first)
   end
 
+  step 'merge request "Bug NS-04" have 2 upvotes and 1 downvote' do
+    merge_request = MergeRequest.find_by(title: 'Bug NS-04')
+    create_list(:upvote_note, 2, project: project, noteable: merge_request)
+    create(:downvote_note, project: project, noteable: merge_request)
+  end
+
+  step 'merge request "Bug NS-06" have 1 upvote and 2 downvotes' do
+    merge_request = MergeRequest.find_by(title: 'Bug NS-06')
+    create(:upvote_note, project: project, noteable: merge_request)
+    create_list(:downvote_note, 2, project: project, noteable: merge_request)
+  end
+
+  step 'The list should be sorted by "Least popular"' do
+    page.within '.mr-list' do
+      page.within 'li.merge-request:nth-child(1)' do
+        expect(page).to have_content 'Bug NS-06'
+        expect(page).to have_content '1 2'
+      end
+
+      page.within 'li.merge-request:nth-child(2)' do
+        expect(page).to have_content 'Bug NS-04'
+        expect(page).to have_content '2 1'
+      end
+
+      page.within 'li.merge-request:nth-child(3)' do
+        expect(page).to have_content 'Bug NS-05'
+        expect(page).to have_content '0 0'
+      end
+    end
+  end
+
+  step 'The list should be sorted by "Most popular"' do
+    page.within '.mr-list' do
+      page.within 'li.merge-request:nth-child(1)' do
+        expect(page).to have_content 'Bug NS-04'
+        expect(page).to have_content '2 1'
+      end
+
+      page.within 'li.merge-request:nth-child(2)' do
+        expect(page).to have_content 'Bug NS-06'
+        expect(page).to have_content '1 2'
+      end
+
+      page.within 'li.merge-request:nth-child(3)' do
+        expect(page).to have_content 'Bug NS-05'
+        expect(page).to have_content '0 0'
+      end
+    end
+  end
+
   step 'I click on the Changes tab' do
     page.within '.merge-request-tabs' do
       click_link 'Changes'
diff --git a/features/steps/shared/issuable.rb b/features/steps/shared/issuable.rb
index 2117feaedb899bc2e60888a68d3cf8326a73cf27..ae10c6069a93e16b21aa057ae83f78c68d6a43b8 100644
--- a/features/steps/shared/issuable.rb
+++ b/features/steps/shared/issuable.rb
@@ -113,6 +113,22 @@ module SharedIssuable
     end
   end
 
+  step 'I sort the list by "Least popular"' do
+    find('button.dropdown-toggle.btn').click
+
+    page.within('ul.dropdown-menu.dropdown-menu-align-right li') do
+      click_link 'Least popular'
+    end
+  end
+
+  step 'I sort the list by "Most popular"' do
+    find('button.dropdown-toggle.btn').click
+
+    page.within('ul.dropdown-menu.dropdown-menu-align-right li') do
+      click_link 'Most popular'
+    end
+  end
+
   step 'The list should be sorted by "Oldest updated"' do
     page.within('div.dropdown.inline.prepend-left-10') do
       expect(page.find('button.dropdown-toggle.btn')).to have_content('Oldest updated')
diff --git a/spec/factories/notes.rb b/spec/factories/notes.rb
index 35a20adeef3bd01871a4bc2b684f95338310dd95..32c202891d83ce9c0db8a8814165c74ce4d7c460 100644
--- a/spec/factories/notes.rb
+++ b/spec/factories/notes.rb
@@ -34,6 +34,8 @@ FactoryGirl.define do
     factory :note_on_merge_request_diff, traits: [:on_merge_request, :on_diff]
     factory :note_on_project_snippet,    traits: [:on_project_snippet]
     factory :system_note,                traits: [:system]
+    factory :downvote_note,              traits: [:award, :downvote]
+    factory :upvote_note,                traits: [:award, :upvote]
 
     trait :on_commit do
       project
@@ -65,6 +67,18 @@ FactoryGirl.define do
       system true
     end
 
+    trait :award do
+      is_award true
+    end
+
+    trait :downvote do
+      note "thumbsdown"
+    end
+
+    trait :upvote do
+      note "thumbsup"
+    end
+
     trait :with_attachment do
       attachment { fixture_file_upload(Rails.root + "spec/fixtures/dk.png", "`/png") }
     end