Jason Alexander Isaac (born December 25, 1971) is a transportation consultant from Dripping Springs, Texas, who is a Republican member of the Texas House of Representatives. Since 2013, he has represented District 45 in Hays and Blanco counties in suburban Austin. In his first term from 2011 to 2013, the district also included Caldwell County.Unopposed in his party primary on March 4, 2014, Isaac is seeking a third term in the general election scheduled for November 4.