Charles Mainor (born January 23, 1967) is an American Democratic Party politician who served in the New Jersey General Assembly representing the 31st Legislative District. Mainor is a police detective in Jersey City. He succeeded L. Harvey Smith, who did not seek re-election in 2009. Mainor graduated from New Jersey City University with a B.S. degree in criminal justice. He ran unsuccessfully for the Hudson County Board of Chosen Freeholders twice before his election to the Assembly in 2009.