Brian M. Kolb (born August 14, 1952) is the New York State assemblyman from the 131st District, and is the minority leader of the Assembly. He was unanimously chosen as minority leader in April 2009, following the resignation of Jim Tedisco.Kolb, a Republican, has served in the Assembly since February 2000, when he won a special election. The 131st District comprises all of Ontario County and portions of Seneca County in Upstate New York.