diff --git a/db/sqlite.py b/db/sqlite.py
index e8d9abc..3e2d2ee 100644
--- a/db/sqlite.py
+++ b/db/sqlite.py
@@ -84,7 +84,15 @@ class DB:
             (thread,)
         ).fetchone()
         comments = db.execute('''
-            select comment_id, parent_id, author_id, name, text, create_time, modify_time
+            select
+              comment_id,
+              parent_id,
+              author_id,
+              name,
+              text,
+              create_time,
+              modify_time,
+              hidden
             from comments
               left join users
               on author_id = user_id
@@ -148,8 +156,21 @@ class DB:
                 union
                 select comment_id from descendant_of, comments where id = parent_id
               )
-            select id, parent_id, author_id, name, text, create_time, modify_time from descendant_of, comments, users
-            where id = comment_id and user_id = author_id
+            select
+              id,
+              parent_id,
+              author_id,
+              name,
+              text,
+              create_time,
+              modify_time,
+              hidden
+            from
+              descendant_of,
+              comments,
+              users
+            where id = comment_id
+              and user_id = author_id
             ''',
             (comment_id,)
         )
@@ -509,6 +530,15 @@ class DB:
             (hide, thread_id)
         )
 
+    def set_comment_hidden(self, comment_id, hide):
+        return self.change_one('''
+            update comments
+            set hidden = ?
+            where comment_id = ?
+            ''',
+            (hide, comment_id)
+        )
+
     def change_one(self, query, values):
         db = self._db()
         c = db.cursor()
diff --git a/main.py b/main.py
index 07a3651..e27c6e8 100644
--- a/main.py
+++ b/main.py
@@ -63,14 +63,14 @@ def forum(forum_id):
 
 @app.route('/thread/<int:thread_id>/')
 def thread(thread_id):
-    user_id = session.get('user_id')
+    user = get_user()
     title, text, author, author_id, create_time, modify_time, comments, hidden = db.get_thread(thread_id)
-    comments = create_comment_tree(comments)
+    comments = create_comment_tree(comments, user)
     return render_template(
         'thread.html',
         title = title,
         config = config,
-        user = get_user(),
+        user = user,
         text = text,
         author = author,
         author_id = author_id,
@@ -83,8 +83,9 @@ def thread(thread_id):
 
 @app.route('/comment/<int:comment_id>/')
 def comment(comment_id):
+    user = get_user()
     thread_id, parent_id, title, comments = db.get_subcomments(comment_id)
-    comments = create_comment_tree(comments)
+    comments = create_comment_tree(comments, user)
     reply_comment, = comments
     comments = reply_comment.children
     reply_comment.children = []
@@ -92,7 +93,7 @@ def comment(comment_id):
         'comments.html',
         title = title,
         config = config,
-        user = get_user(),
+        user = user,
         reply_comment = reply_comment,
         comments = comments,
         parent_id = parent_id,
@@ -583,7 +584,6 @@ def set_hide_thread(thread_id):
         return user
 
     try:
-        print(request.form['hide'])
         hide = request.form['hide'] != '0'
         hide_str = 'Hidden' if hide else 'Unhidden'
         if db.set_thread_hidden(thread_id, hide):
@@ -595,6 +595,24 @@ def set_hide_thread(thread_id):
 
     return redirect(request.form['redirect'])
 
+@app.route('/comment/<int:comment_id>/hide/', methods = ['POST'])
+def set_hide_comment(comment_id):
+    chk, user = _moderator_check()
+    if not chk:
+        return user
+
+    try:
+        hide = request.form['hide'] != '0'
+        hide_str = 'Hidden' if hide else 'Unhidden'
+        if db.set_comment_hidden(comment_id, hide):
+            flash(f'{hide_str} comment', 'success')
+        else:
+            flash(f'Failed to {hide_str.lower()} comment', 'error')
+    except Exception as e:
+        flash(str(e), 'error')
+
+    return redirect(request.form['redirect'])
+
 # TODO can probably be a static-esque page, maybe?
 @app.route('/help/')
 def help():
@@ -622,7 +640,7 @@ def _admin_check():
 
 
 class Comment:
-    def __init__(self, id, author_id, author, text, create_time, modify_time, parent_id):
+    def __init__(self, id, parent_id, author_id, author, text, create_time, modify_time, hidden):
         self.id = id
         self.author_id = author_id
         self.author = author
@@ -631,18 +649,17 @@ class Comment:
         self.create_time = create_time
         self.modify_time = modify_time
         self.parent_id = parent_id
+        self.hidden = hidden
 
-def create_comment_tree(comments):
+def create_comment_tree(comments, user):
     start = time.time();
     # Collect comments first, then build the tree in case we encounter a child before a parent
-    comment_map = {
-        comment_id: Comment(comment_id, author_id, author, text, create_time, modify_time, parent_id)
-        for comment_id, parent_id, author_id, author, text, create_time, modify_time
-        in comments
-    }
+    comment_map = { v[0]: Comment(*v) for v in comments }
     root = []
     # Build tree
     for comment in comment_map.values():
+        if comment.hidden and not user.is_moderator():
+            continue
         parent = comment_map.get(comment.parent_id)
         if parent is not None:
             parent.children.append(comment)
diff --git a/templates/comment.html b/templates/comment.html
index d67ca67..d4b4024 100644
--- a/templates/comment.html
+++ b/templates/comment.html
@@ -1,10 +1,13 @@
+{% from 'moderator.html' import moderate_comment with context -%}
+
 {%- macro author(id, name, ctime, mtime) -%}
 <i><a href="{{ url_for('user_info', user_id = id) }}">{{ name }}</a> - {{ format_since(ctime) }}{% if ctime != mtime %} (last modified {{ format_since(mtime) }}){% endif %}</i>
 {%- endmacro -%}
 
 {%- macro comment_author(comment, thread_id, can_delete) -%}
 <span class=small>
-{{- author(comment.author_id, comment.author, comment.create_time, comment.modify_time) }} |
+{{- '[hidden]' if comment.hidden else '' }}
+{{ author(comment.author_id, comment.author, comment.create_time, comment.modify_time) }} |
 {# Suffixing a # prevents unnecessary reloads #}
 <a href="{{ url_for('thread', thread_id = thread_id) }}#"> thread</a>
 {%- if comment.parent_id is not none -%}
@@ -15,6 +18,9 @@
 {%- if can_delete -%}
 <a href="{{ url_for('confirm_delete_comment', comment_id = comment.id) }}"> delete</a>
 {%- endif -%}
+{%- if user.is_moderator() -%}
+{{ moderate_comment(comment.id, comment.hidden) }}
+{%- endif -%}
 {%- endif -%}
 </span>
 {%- endmacro -%}
diff --git a/templates/moderator.html b/templates/moderator.html
index dd9ab2d..d6a0bc8 100644
--- a/templates/moderator.html
+++ b/templates/moderator.html
@@ -5,3 +5,11 @@
 <input type=submit value="{{ 'Unhide' if hidden else 'Hide' }}">
 </form>
 {% endmacro %}
+
+{% macro moderate_comment(id, hidden) %}
+<form method=post action="{{ url_for('set_hide_comment', comment_id = id) }}" style=display:inline>
+<input name=redirect value="{{ request.full_path }}" hidden>
+<input name=hide value={{ 0 if hidden else 1 }} hidden>
+<input type=submit value="{{ 'Unhide' if hidden else 'Hide' }}">
+</form>
+{% endmacro %}