Mark C. Johns[2] (born October 29, 1952)[1] is an American politician who represents District 8 in the Monroe County Legislature.

Johns is a lifetime resident of Webster, where he attended Catholic and public schools.

[4] His first foray into politics was a run against congresswoman Louise Slaughter for New York's 28th congressional district in 2000.

Johns also ran unsuccessfully against state assemblyman David Koon in 2004 and 2006[5] before winning the assembly seat in 2010 by a slim margin.

[7] On April 13, 2022, he was appointed to fill a vacancy in the 8th District of the Monroe County Legislature after the resignation of Matthew Terp.