Raymond Stevens "Thunder" Tumlin Jr. is an American politician and former member of the Georgia House of Representatives representing District 38, which encompasses parts of Cobb County. He became mayor of Marietta, Georgia in 2010 and was reelected in 2013. Tumlin has served as Chairman of the Board of the Marietta Board of Education. He serves as Chairman of the Marietta Board of Lights and Water and was elected to the Board Of Directors of the Municipal Electric Association of Georgia (MEAG) in 2013. Tumlin is a member of the Republican Party.