diff --git a/kitsune/questions/templates/questions/answers.html b/kitsune/questions/templates/questions/answers.html
index 5d784bee808..9c930b5cef1 100644
--- a/kitsune/questions/templates/questions/answers.html
+++ b/kitsune/questions/templates/questions/answers.html
@@ -72,7 +72,7 @@ <h2 class="summary">{{ question.title }}</h2>
           {% if question.last_answer %}
             <li>
               <a href="{{ question.last_answer.get_absolute_url() }}">
-                {{ _('Last reply by {user}')|f(user=question.last_answer.creator.username) }}
+                {{ _('Last reply by {user}')|f(user=display_name(question.last_answer.creator)) }}
               </a>
               <span class="last-answer-date">
                 {{ question.last_answer.created|timesince }}
@@ -102,7 +102,7 @@ <h2 class="summary">{{ question.title }}</h2>
 
         {% if question.updated_by %}
           <p class="edited">
-            {{ _('Modified {datetime} by {name}')|fe(name=question.updated_by.username, datetime=datetimeformat(question.updated, format='longdatetime')) }}
+            {{ _('Modified {datetime} by {name}')|fe(name=display_name(question.updated_by), datetime=datetimeformat(question.updated, format='longdatetime')) }}
           </p>
         {% endif %}
 
diff --git a/kitsune/questions/templates/questions/includes/answer.html b/kitsune/questions/templates/questions/includes/answer.html
index 9ccb946fecc..3b664881558 100644
--- a/kitsune/questions/templates/questions/includes/answer.html
+++ b/kitsune/questions/templates/questions/includes/answer.html
@@ -56,7 +56,7 @@ <h3 class="is-owner">{{_('Question owner')}}</h3>
     </div>
     {% if answer.updated_by %}
       <p class="edited">
-        {{ _('Modified {datetime} by {name}')|fe(name=answer.updated_by.username, datetime=datetimeformat(answer.updated, format='longdatetime')) }}
+        {{ _('Modified {datetime} by {name}')|fe(name=display_name(answer.updated_by), datetime=datetimeformat(answer.updated, format='longdatetime')) }}
       </p>
     {% endif %}
   </div>
diff --git a/kitsune/questions/templates/questions/mobile/questions.html b/kitsune/questions/templates/questions/mobile/questions.html
index 1737cddc455..bfc3cd09e12 100644
--- a/kitsune/questions/templates/questions/mobile/questions.html
+++ b/kitsune/questions/templates/questions/mobile/questions.html
@@ -17,7 +17,7 @@
           <ol>
             {% if karma_top %}
               {% for user in karma_top[:10] %}
-                <li>{{ user.username }}</li>
+                <li>{{ display_name(user) }}</li>
               {% endfor %}
             {% elif top_contributors %}
               {% for user in top_contributors[:10] %}
diff --git a/kitsune/questions/templates/questions/questions.html b/kitsune/questions/templates/questions/questions.html
index a917a832937..39c0cd4a8d8 100644
--- a/kitsune/questions/templates/questions/questions.html
+++ b/kitsune/questions/templates/questions/questions.html
@@ -81,17 +81,17 @@ <h3>
           {% if karma_top %}
             <ol>
               {% for u in karma_top[:5] %}
-                <li{% if u == user %} class="me"{% endif %}>{{ u.username }}</li>
+                <li{% if u == user %} class="me"{% endif %}>{{ display_name(u) }}</li>
               {% endfor %}
             </ol>
             <ol start="6">
               {% for u in karma_top[5:10] %}
-                <li{% if u == user %} class="me"{% endif %}>{{ u.username }}</li>
+                <li{% if u == user %} class="me"{% endif %}>{{ display_name(u) }}</li>
               {% endfor %}
             </ol>
             {% if karma_ranking and karma_ranking > 10 %}
               <ol start="{{ karma_ranking }}">
-                <li class="me">{{ user.username }}</li>
+                <li class="me">{{ display_name(user) }}</li>
               </ol>
             {% endif %}
           {% else %}
@@ -202,7 +202,7 @@ <h2><a href="{{ question.get_absolute_url() }}">{{ question.title }}</a></h2>
             {% if question.num_answers > 0 and question.last_answer %}
               <div>
                 <a href="{{ question.last_answer.get_absolute_url() }}">
-                  {{ _('Last reply by {user}')|f(user=question.last_answer.creator.username) }}
+                  {{ _('Last reply by {user}')|f(user=display_name(question.last_answer.creator)) }}
                 </a> {{ _('on') }} {{ datetimeformat(question.last_answer.created, format='datetime') }}
               </div>
             {% endif %}