Mark Tooley (born 1965) is an American Methodist layman and writer. He is a lifelong member of the United Methodist Church, who became president of the Washington-D.C. based Institute on Religion and Democracy (IRD), in 2009, a conservative religious think tank noted for its opposition to religious and social liberalism.
In November 2009, Tooley signed an ecumenical statement known as the Manhattan Declaration calling on Evangelicals, Catholics and Orthodox not to comply with rules and laws permitting abortion, same-sex marriage and other matters that go against their religious consciences.
Tooley authored Methodism & Politics in the 20th Century: From William McKinley to 9-11 (2011), the first comprehensive overview of the political witness of what was once America's largest Protestant denomination.
In 2015 Tooley's book, The Peace That Almost Was: The Forgotten Story of the 1861 Washington Peace Conference and the Final Attempt to Avert the Civil War was published by Thomas Nelson/Harper Collins.
- Methodism and Politics in the 20th Century from William McKinley to 9/11, Bristol House, 2011, ISBN 9781885224712
- The Peace That Almost Was: The Forgotten Story of the 1861 Washington Peace Conference and the Final Attempt to Avert the Civil War. Thomas Nelson. 14 July 2015. ISBN 978-0-7180-2224-2.
- Three Weeks Till Hell Breaks Loose, Harpercollins Christian Pub, 2015, ISBN 9780529110596
- "Taking Back the United Methodist Church General Conference 2008 Update: Mark Tooley, Larry Stuart: 9781885224675: Amazon.com: Books".
- "WORLD - From CIA to IRD - Marvin Olasky - Oct. 10, 2009". WORLD.
- "demossnewspond.com". Archived from the original on 2013-09-01.
- "A review of Mark Tooley's Methodism and Politics In the 20th Century". goodnewsmag.org. Retrieved 2015-12-08.
- "Book review: 'Methodism and Politics in the Twentieth Century'". MethodistThinker.com. Retrieved 2015-12-08.