diff --git a/app/models/user.rb b/app/models/user.rb
index 30f8cf81..3cdeb36f 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -94,6 +94,12 @@ class User < ActiveRecord::Base
     friends.include? target_user
   end
 
+  # @param group [Group]
+  # @return [Boolean] true if +self+ is a member of +group+
+  def member_of?(group)
+    group_memberships.pluck(:group_id).include? group.id
+  end
+
   # answers a question
   # @param question [Question] the question to answer
   # @param content [String] the answer content
diff --git a/app/views/user/_actions.html.haml b/app/views/user/_actions.html.haml
index 2ede6102..c00c8ed7 100644
--- a/app/views/user/_actions.html.haml
+++ b/app/views/user/_actions.html.haml
@@ -20,6 +20,9 @@
             %a{href: '#', name: 'user-action', data: { action: :block, type: type, target: user.screen_name }}
               %i.fa.fa-minus-circle
               Block
+        %li
+          %a{href: '#', data: { target: "#modal-group-memberships", toggle: :modal }}
+            Manage group memberships
         %li
           %a{href: '#', data: { action: 'report-user', target: user.screen_name }}
             %i.fa.fa-exclamation-triangle
diff --git a/app/views/user/_modal_group_memberships.html.haml b/app/views/user/_modal_group_memberships.html.haml
new file mode 100644
index 00000000..6b16e64f
--- /dev/null
+++ b/app/views/user/_modal_group_memberships.html.haml
@@ -0,0 +1,16 @@
+#modal-group-memberships.modal.fade{"aria-hidden" => "true", "aria-labelledby" => "modal-group-memberships-label", :role => "dialog", :tabindex => "-1"}
+  .modal-dialog
+    .modal-content
+      .modal-header
+        %button.close{"data-dismiss" => "modal", :type => "button"}
+          %span{"aria-hidden" => "true"} ×
+          %span.sr-only Close
+        %h4#modal-group-memberships-label.modal-title Manage group memberships
+      .modal-body
+        - current_user.groups.each do |group|
+          %label
+            %input{type: :checkbox, name: 'gm-group-check', data: { group_name: group.name }, checked: @user.member_of?(group)}
+            = group.display_name
+      .modal-footer
+        %button.btn.btn-default{"data-dismiss" => "modal", :type => "button"} Cancel
+        %button.btn.btn-primary{name: 'gm-save', :type => "button"} Save
\ No newline at end of file
diff --git a/app/views/user/groups.html.haml b/app/views/user/groups.html.haml
index eae13ff7..39a5999a 100644
--- a/app/views/user/groups.html.haml
+++ b/app/views/user/groups.html.haml
@@ -15,3 +15,5 @@
           = group.display_name
 
   .visible-xs= render 'shared/links'
+- if user_signed_in?
+  = render 'user/modal_group_memberships'
\ No newline at end of file
diff --git a/app/views/user/show.html.haml b/app/views/user/show.html.haml
index 45cd880e..087ecc93 100644
--- a/app/views/user/show.html.haml
+++ b/app/views/user/show.html.haml
@@ -15,3 +15,5 @@
       %button#load-more-btn.btn.btn-default{type: :button, data: { current_page: @answers.current_page }}
         Load more
   .visible-xs= render 'shared/links'
+- if user_signed_in?
+  = render 'user/modal_group_memberships'
diff --git a/app/views/user/show_follow.html.haml b/app/views/user/show_follow.html.haml
index c6063b0d..54899d40 100644
--- a/app/views/user/show_follow.html.haml
+++ b/app/views/user/show_follow.html.haml
@@ -17,3 +17,5 @@
       %button#load-more-btn.btn.btn-default{type: :button, data: { current_page: @users.current_page }}
         Load more
   .visible-xs= render 'shared/links'
+- if user_signed_in?
+  = render 'user/modal_group_memberships'
\ No newline at end of file