Joseph Vas (born January 18, 1955) is an American Democratic Party politician, who has served in the New Jersey General Assembly from 2004 to 2010, where he represented the 19th Legislative District. He did not seek re-election to the assembly in 2009. He also served as Mayor of Perth Amboy, New Jersey from 1990 to 2008. He was defeated for re-election to a 5th full term by local bank vice president Wilda Diaz in 2008 by a 58% to 42% margin. He was elected Perth Amboy Democratic Chairman in 2008, succeeding his longtime campaign chairman Ray Geneske. Vas resigned as the party chairman in 2009. He was convicted of state corruption charges in 2010 and federal corruption charges in 2011.