diff --git a/roles/mediawiki/defaults/main.yml b/roles/mediawiki/defaults/main.yml
new file mode 100644
index 000000000..3bfa59278
--- /dev/null
+++ b/roles/mediawiki/defaults/main.yml
@@ -0,0 +1,20 @@
+mediawiki_download_base_url: https://releases.wikimedia.org/mediawiki
+mediawiki_src: 1.29/mediawiki-1.29.1.tar.gz
+
+mediawiki_db_name: iiab_mediawiki
+mediawiki_db_user: iiab_mediawiki_user
+mediawiki_db_user_password: changeme
+
+mediawiki_site_name: Community Wiki
+
+mediawiki_install: True
+mediawiki_enabled: True
+
+mediawiki_install_path: "{{ content_base }}"
+#mediawiki_install_path: /library
+
+mediawiki_abs_path: "{{ mediawiki_install_path }}/mediawiki"
+#mediawiki_abs_path: /library/mediawiki
+
+mediawiki_url: /mediawiki
+mediawiki_full_url: "http://{{ iiab_hostname }}{{ mediawiki_url }}"
diff --git a/roles/mediawiki/tasks/install.yml b/roles/mediawiki/tasks/install.yml
new file mode 100644
index 000000000..f0b24e577
--- /dev/null
+++ b/roles/mediawiki/tasks/install.yml
@@ -0,0 +1,132 @@
+- name: Install required packages
+  package: name={{ item }}
+           state=present
+  with_items:
+    - php7.0-intl
+    - php7.0-mbstring
+  tags:
+    - download
+
+- name: Download the latest MediaWiki software
+  get_url:
+    url: "{{ mediawiki_download_base_url }}/{{ mediawiki_src }}"
+    dest: "{{ downloads_dir }}"
+    timeout: "{{ download_timeout }}"
+#   force: yes
+#   backup: yes
+  register: mediawiki_download_output
+  when: internet_available
+
+- name: Create link /opt/iiab/downloads/mediawiki.tar.gz pointing to {{ mediawiki_download_output.dest }}
+  file:
+    src: "{{ mediawiki_download_output.dest }}"
+    dest: "{{ downloads_dir }}/mediawiki.tar.gz"
+    state: link
+  when: mediawiki_download_output.dest is defined
+
+- name: Check if /opt/iiab/downloads/mediawiki.tar.gz link exists
+  stat:
+    path: "{{ downloads_dir }}/mediawiki.tar.gz"
+  register: mediawiki_link
+
+- name: FAIL (force Ansible to exit) IF /opt/iiab/downloads/mediawiki.tar.gz doesn't exist
+  fail:
+    msg: "{{ downloads_dir }}/mediawiki.tar.gz is REQUIRED in order to install mediawiki."
+  when: not mediawiki_link.stat.exists
+
+- name: "Unpack /opt/iiab/downloads/mediawiki.tar.gz to permanent location /library/mediawiki - owner: root, group: {{ apache_user }}, mode: 0664, keep_newer: yes"
+  unarchive:
+    src: "{{ downloads_dir }}/mediawiki.tar.gz"
+    dest: "{{ mediawiki_install_path }}"
+    owner: root
+    group: "{{ apache_user }}"
+    mode: 0664
+    keep_newer: yes
+
+# - name: Rename /library/mediawiki* to /library/mediawiki
+#   shell: if [ ! -d {{ mediawiki_abs_path }} ]; then mv {{ mediawiki_abs_path }}* {{ mediawiki_abs_path }}; fi
+
+#- name: Make Apache owner and group, 1st pass permissions set to 0664
+#  file: path={{ mediawiki_abs_path }}
+#        recurse=yes
+#        owner=root
+#        group={{ apache_user }}
+#        mode=0664
+#        state=directory
+
+- name: Make MediaWiki install directories 775 so Apache can traverse and write (most files remain 0664)
+  command: "/usr/bin/find {{ mediawiki_abs_path }} -type d -exec chmod 775 {} +"
+
+- name: MySQL database needs to be running if we are trying to create a new db
+  service:
+    state: started
+    name: "{{ mysql_service }}"
+
+- name: Create MySQL mediawiki database
+  mysql_db:
+    name: "{{ mediawiki_db_name }}"
+    state: present
+
+- name: Create MySQL mediawiki database user
+  mysql_user:
+    name: "{{ mediawiki_db_user }}"
+    password: "{{ mediawiki_db_user_password }}"
+    priv: "{{ mediawiki_db_name }}.*:ALL,GRANT"
+    state: present
+
+- name: Copy mediawiki config file
+  template:
+    src: LocalSettings.php.j2
+    dest: "{{ mediawiki_abs_path }}/LocalSettings.php"
+    owner: root
+    group: "{{ apache_user }}"
+    mode: 0600
+
+- name: Copy mediawiki httpd conf file
+  template:
+    src: mediawiki.conf.j2
+    dest: "/etc/{{ apache_config_dir }}/mediawiki.conf"
+
+- name: Enable httpd conf file if we are disabled (debuntu)
+  file:
+    src: /etc/apache2/sites-available/mediawiki.conf
+    dest: /etc/apache2/sites-enabled/mediawiki.conf
+    state: link
+  when: mediawiki_enabled and is_debuntu
+
+- name: Remove httpd conf file if we are disabled (OS's other than debuntu)
+  file:
+    path: /etc/apache2/sites-enabled/mediawiki.conf
+    state: absent
+  when: not mediawiki_enabled and is_debuntu
+
+- name: Restart Apache, so it picks up the new aliases
+  service:
+    name: "{{ apache_service }}"
+    state: restarted
+
+- name: Add 'mediawiki' to list of services at /etc/iiab/iiab.ini
+  ini_file:
+    dest: "{{ service_filelist }}"
+    section: mediawiki
+    option: "{{ item.option }}"
+    value: "{{ item.value }}"
+  with_items:
+    - option: name
+      value: mediawiki
+    - option: description
+      value: '"mediawiki is a blog and web site management application."'
+    - option: mediawiki_src
+      value: "{{ mediawiki_src }}"
+    - option: mediawiki_abs_path
+      value: "{{ mediawiki_abs_path }}"
+    - option: mediawiki_db_name
+      value: "{{ mediawiki_db_name }}"
+    - option: mediawiki_db_user
+      value: "{{ mediawiki_db_user }}"
+    - option: mediawiki_url
+      value: "{{ mediawiki_url }}"
+    - option: mediawiki_full_url
+      value: "{{ mediawiki_full_url }}"
+    - option: mediawiki_enabled
+      value: "{{ mediawiki_enabled }}"
diff --git a/roles/mediawiki/tasks/main.yml b/roles/mediawiki/tasks/main.yml
new file mode 100644
index 000000000..664bd28d0
--- /dev/null
+++ b/roles/mediawiki/tasks/main.yml
@@ -0,0 +1,5 @@
+# SEE "emergency" REINSTALL INSTRUCTIONS IN roles/wordpress/tasks/install.yml
+
+- name: Include the install playbook
+  include_tasks: install.yml
+  when: wordpress_install
diff --git a/roles/mediawiki/templates/LocalSettings.php.j2 b/roles/mediawiki/templates/LocalSettings.php.j2
new file mode 100644
index 000000000..a252408eb
--- /dev/null
+++ b/roles/mediawiki/templates/LocalSettings.php.j2
@@ -0,0 +1,133 @@
+<?php
+# This file was automatically generated by the MediaWiki 1.29.1
+# installer. If you make manual changes, please keep track in case you
+# need to recreate them later.
+#
+# See includes/DefaultSettings.php for all configurable settings
+# and their default values, but don't forget to make changes in _this_
+# file, not there.
+#
+# Further documentation for configuration settings may be found at:
+# https://www.mediawiki.org/wiki/Manual:Configuration_settings
+
+# Protect against web entry
+if ( !defined( 'MEDIAWIKI' ) ) {
+	exit;
+}
+
+## Uncomment this to disable output compression
+# $wgDisableOutputCompression = true;
+
+$wgSitename = "{{ mediawiki_site_name }}";
+
+## The URL base path to the directory containing the wiki;
+## defaults for all runtime URL paths are based off of this.
+## For more information on customizing the URLs
+## (like /w/index.php/Page_title to /wiki/Page_title) please see:
+## https://www.mediawiki.org/wiki/Manual:Short_URL
+$wgScriptPath = "/modules/wikem";
+
+## The protocol and server name to use in fully-qualified URLs
+$wgServer = "http://{{ iiab_hostname }}.{{ iiab_domain }}";
+
+## The URL path to static resources (images, scripts, etc.)
+$wgResourceBasePath = $wgScriptPath;
+
+## The URL path to the logo.  Make sure you change this from the default,
+## or else you'll overwrite your logo when you upgrade!
+$wgLogo = "$wgResourceBasePath/resources/assets/wiki.png";
+
+## UPO means: this is also a user preference option
+
+$wgEnableEmail = true;
+$wgEnableUserEmail = true; # UPO
+
+$wgEmergencyContact = "apache@{{ iiab_hostname }}.{{ iiab_domain }}";
+$wgPasswordSender = "apache@{{ iiab_hostname }}.{{ iiab_domain }}";
+
+$wgEnotifUserTalk = false; # UPO
+$wgEnotifWatchlist = false; # UPO
+$wgEmailAuthentication = true;
+
+## Database settings
+$wgDBtype = "mysql";
+$wgDBserver = "localhost";
+$wgDBname = "{{ mediawiki_db_name }}";
+$wgDBuser = "{{ mediawiki_db_user }}";
+$wgDBpassword = "{{ mediawiki_db_user_password }}";
+
+# MySQL specific settings
+$wgDBprefix = "";
+
+# MySQL table options to use during installation or update
+$wgDBTableOptions = "ENGINE=InnoDB, DEFAULT CHARSET=binary";
+
+# Experimental charset support for MySQL 5.0.
+$wgDBmysql5 = false;
+
+## Shared memory settings
+$wgMainCacheType = CACHE_NONE;
+$wgMemCachedServers = [];
+
+## To enable image uploads, make sure the 'images' directory
+## is writable, then set this to true:
+$wgEnableUploads = false;
+#$wgUseImageMagick = true;
+#$wgImageMagickConvertCommand = "/usr/bin/convert";
+
+# InstantCommons allows wiki to use images from https://commons.wikimedia.org
+$wgUseInstantCommons = false;
+
+# Periodically send a pingback to https://www.mediawiki.org/ with basic data
+# about this MediaWiki instance. The Wikimedia Foundation shares this data
+# with MediaWiki developers to help guide future development efforts.
+$wgPingback = false;
+
+## If you use ImageMagick (or any other shell command) on a
+## Linux server, this will need to be set to the name of an
+## available UTF-8 locale
+$wgShellLocale = "en_US.utf8";
+
+## Set $wgCacheDirectory to a writable directory on the web server
+## to make your wiki go slightly faster. The directory should not
+## be publically accessible from the web.
+#$wgCacheDirectory = "$IP/cache";
+
+# Site language code, should be one of the list in ./languages/data/Names.php
+$wgLanguageCode = "en";
+
+$wgSecretKey = "7fe8694a015bc9faaa1be7151ea650485bf2df5a7bd86d0463da01ada946cd52";
+
+# Changing this will log out all existing sessions.
+$wgAuthenticationTokenVersion = "1";
+
+# Site upgrade key. Must be set to a string (default provided) to turn on the
+# web installer while LocalSettings.php is in place
+$wgUpgradeKey = "52eee9ee5a42b1d1";
+
+## For attaching licensing metadata to pages, and displaying an
+## appropriate copyright notice / icon. GNU Free Documentation
+## License and Creative Commons licenses are supported so far.
+$wgRightsPage = ""; # Set to the title of a wiki page that describes your license/copyright
+$wgRightsUrl = "";
+$wgRightsText = "";
+$wgRightsIcon = "";
+
+# Path to the GNU diff3 utility. Used for conflict resolution.
+$wgDiff3 = "/usr/bin/diff3";
+
+## Default skin: you can change the default skin. Use the internal symbolic
+## names, ie 'vector', 'monobook':
+$wgDefaultSkin = "vector";
+
+# Enabled skins.
+# The following skins were automatically enabled:
+wfLoadSkin( 'CologneBlue' );
+wfLoadSkin( 'Modern' );
+wfLoadSkin( 'MonoBook' );
+wfLoadSkin( 'Vector' );
+
+
+# End of automatically generated settings.
+# Add more configuration options below.
+
diff --git a/roles/mediawiki/templates/mediawiki.conf.j2 b/roles/mediawiki/templates/mediawiki.conf.j2
new file mode 100644
index 000000000..b49a9e96d
--- /dev/null
+++ b/roles/mediawiki/templates/mediawiki.conf.j2
@@ -0,0 +1,8 @@
+RewriteEngine on
+
+Alias {{ wp_url }} {{ wp_abs_path }}
+<Directory {{ wp_abs_path }}>
+    Options Indexes FollowSymLinks
+    AllowOverride All
+    Require all granted
+</Directory>