Jack Errol Robinson III (May 12, 1960 – November 20, 2017) was an American Republican politician from Massachusetts.
He ran for the United States Senate in 2000 against Ted Kennedy (Democratic) and Carla Howell (Libertarian), losing to Kennedy.
He ran for Secretary of the Commonwealth in 2002, losing to William F.
Galvin, and for US House of Representatives in Massachusetts's 9th district in 2006, losing to Stephen Lynch.
In 2009, he ran against Scott Brown in the Republican primaries for the special election to fill Ted Kennedy's Senate seat, but lost to Brown in the primary.