John Loudon was born in Ballwin, educated at Westminster College (B.A., 1989) and is currently doing post-graduate work specializing in Law and Government Policy studies in the J.D. program at Oak Brook College.

A Republican, John Loudon was elected to the House of Representatives in 1994, and reelected in 1996 and 1998. He was elected to the Missouri Senate in 2000, serving as the youngest member, and re-elected in 2004. 

John has authored and passed several pieces of landmark legislation including passage of two Senate Bill #1s in 2005 (one in a Special Legislative Session). 

A small business owner, Sen. Loudon is a member of:

• Several Chambers of Commerce
• Covenant Family Church 
• Bethany Christian Services Executive Board 
• The National Republican Legislators Association (Mo. chairman) 
• The American Legislative Exchange Council 
• Telecommunications and Information Technology Task Force 
• Delta Tau Delta Fraternity 
• Missouri Pachyderms (since 1990) 

Senator Loudon has earned numerous awards, including: 

• Taxpayer Watchdog of the Year, Missouri Taxpayers’ Watchdog Association 
• Spirit of Enterprise Award, by the Mo. Chamber of Commerce 
• Voice of Missouri Business, by the Associated Industries of Missouri 
• Legislator of the Year, by St. Louis Regional Chamber and Growth Association 
• Legislator of the Year, by St. Louis Business Journal 
• Legislator of the Year, by the Alliance for Animal Legislation 
• Home Town Hero, by the Independent Electrical Contractors, Inc. 

He married Dr. Gina Gentry in 1990. They have two daughters, Lyda and Lily; and three sons, Jack, Samuel and Bo.