diff --git a/cms/db/__init__.py b/cms/db/__init__.py
index 85a734da77..791be01841 100644
--- a/cms/db/__init__.py
+++ b/cms/db/__init__.py
@@ -6,6 +6,7 @@
 # Copyright © 2010-2012 Matteo Boscariol <boscarim@hotmail.com>
 # Copyright © 2013 Bernard Blackham <bernard@largestprime.net>
 # Copyright © 2013-2018 Luca Wehrstedt <luca.wehrstedt@gmail.com>
+# Copyright © 2014 Vytis Banaitis <vytis.banaitis@gmail.com>
 # Copyright © 2016 Myungwoo Chun <mc.tamaki@gmail.com>
 # Copyright © 2016 Masaki Hara <ackie.h.gmai@gmail.com>
 # Copyright © 2016 Amir Keivan Mohtashami <akmohtashami97@gmail.com>
@@ -75,7 +76,7 @@
     # util
     "test_db_connection", "get_contest_list", "is_contest_id",
     "ask_for_contest", "get_submissions", "get_submission_results",
-    "get_datasets_to_judge", "enumerate_files"
+    "get_datasets_to_judge", "enumerate_files", "get_active_contest_list",
 ]
 
 
@@ -110,7 +111,7 @@
 
 from .util import test_db_connection, get_contest_list, is_contest_id, \
     ask_for_contest, get_submissions, get_submission_results, \
-    get_datasets_to_judge, enumerate_files
+    get_datasets_to_judge, enumerate_files, get_active_contest_list
 
 
 configure_mappers()
diff --git a/cms/db/contest.py b/cms/db/contest.py
index 7543c58d68..da11c0d877 100644
--- a/cms/db/contest.py
+++ b/cms/db/contest.py
@@ -6,6 +6,7 @@
 # Copyright © 2010-2012 Matteo Boscariol <boscarim@hotmail.com>
 # Copyright © 2012-2018 Luca Wehrstedt <luca.wehrstedt@gmail.com>
 # Copyright © 2013 Bernard Blackham <bernard@largestprime.net>
+# Copyright © 2014 Vytis Banaitis <vytis.banaitis@gmail.com>
 # Copyright © 2016 Myungwoo Chun <mc.tamaki@gmail.com>
 # Copyright © 2016 Amir Keivan Mohtashami <akmohtashami97@gmail.com>
 # Copyright © 2018 William Di Luigi <williamdiluigi@gmail.com>
@@ -258,6 +259,12 @@ class Contest(Base):
         nullable=False,
         default=0)
 
+    # Whether this contest should be handled by CMS services.
+    active = Column(
+        Boolean,
+        nullable=False,
+        default=False)
+
     # These one-to-many relationships are the reversed directions of
     # the ones defined in the "child" classes using foreign keys.
 
diff --git a/cms/db/util.py b/cms/db/util.py
index 28fd97ae69..b5897c8480 100644
--- a/cms/db/util.py
+++ b/cms/db/util.py
@@ -5,6 +5,7 @@
 # Copyright © 2010-2012 Stefano Maggiolo <s.maggiolo@gmail.com>
 # Copyright © 2010-2012 Matteo Boscariol <boscarim@hotmail.com>
 # Copyright © 2013-2018 Luca Wehrstedt <luca.wehrstedt@gmail.com>
+# Copyright © 2014 Vytis Banaitis <vytis.banaitis@gmail.com>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -76,6 +77,25 @@ def get_contest_list(session=None):
     return session.query(Contest).all()
 
 
+def get_active_contest_list(session=None):
+    """Return all active contest objects available on the database.
+
+    session (Session): if specified, use such session for connecting
+        to the database; otherwise, create a temporary one and discard
+        it after the operation (this means that no further expansion
+        of lazy properties of the returned Contest objects will be
+        possible).
+
+    return ([Contest]): the list of active contests in the DB.
+
+    """
+    if session is None:
+        with SessionGen() as session:
+            return get_active_contest_list(session)
+
+    return session.query(Contest).filter_by(active=True).all()
+
+
 def is_contest_id(contest_id):
     """Return if there is a contest with the given id in the database.
 
diff --git a/cms/server/admin/handlers/contest.py b/cms/server/admin/handlers/contest.py
index 132b6d9ea7..3806e68df6 100644
--- a/cms/server/admin/handlers/contest.py
+++ b/cms/server/admin/handlers/contest.py
@@ -7,6 +7,7 @@
 # Copyright © 2012-2015 Luca Wehrstedt <luca.wehrstedt@gmail.com>
 # Copyright © 2014 Artem Iglikov <artem.iglikov@gmail.com>
 # Copyright © 2014 Fabian Gundlach <320pointsguy@gmail.com>
+# Copyright © 2014 Vytis Banaitis <vytis.banaitis@gmail.com>
 # Copyright © 2016 Myungwoo Chun <mc.tamaki@gmail.com>
 # Copyright © 2016 Amir Keivan Mohtashami <akmohtashami97@gmail.com>
 # Copyright © 2018 William Di Luigi <williamdiluigi@gmail.com>
@@ -127,6 +128,8 @@ def post(self, contest_id):
             self.get_datetime(attrs, "analysis_start")
             self.get_datetime(attrs, "analysis_stop")
 
+            self.get_bool(attrs, "active")
+
             # Update the contest.
             contest.set_attrs(attrs)
 
diff --git a/cms/server/admin/templates/contest.html b/cms/server/admin/templates/contest.html
index b667213397..6b78f43f0a 100644
--- a/cms/server/admin/templates/contest.html
+++ b/cms/server/admin/templates/contest.html
@@ -81,6 +81,13 @@ <h1>Contest configuration</h1>
       </td>
       <td><input type="text" name="score_precision" value="{{ contest.score_precision }}"></td>
     </tr>
+    <tr>
+      <td>
+        <span class="info" title="Whether this contest should be handled by CMS services."></span>
+        Active
+      </td>
+      <td><input type="checkbox" name="active" {{ "checked" if contest.active else "" }}></td>
+    </tr>
 
     <tr><td colspan=2><h2>Logging in</h2></td></tr>
     <tr>
diff --git a/cmscontrib/importing.py b/cmscontrib/importing.py
index 1254880967..340206a35c 100644
--- a/cmscontrib/importing.py
+++ b/cmscontrib/importing.py
@@ -4,6 +4,7 @@
 # Copyright © 2010-2013 Giovanni Mascellani <mascellani@poisson.phc.unipi.it>
 # Copyright © 2010-2018 Stefano Maggiolo <s.maggiolo@gmail.com>
 # Copyright © 2010-2012 Matteo Boscariol <boscarim@hotmail.com>
+# Copyright © 2014 Vytis Banaitis <vytis.banaitis@gmail.com>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -304,4 +305,6 @@ def update_contest(old_contest, new_contest, parent=None):
         # must be handled differently.
         Contest.tasks: False,
         Contest.participations: False,
+        # Active flag is not managed by the loader.
+        Contest.active: False,
     }, parent=parent)