Gregory Samuel Sorbara (born September 4, 1946) is a former politician in Ontario, Canada.
He was a Liberal member of the Legislative Assembly of Ontario from 1985 to 1995, and again from 2001 to 2012 who represented ridings north of Toronto in the city of Vaughan.
Sorbara served as a cabinet minister in the governments of David Peterson and Dalton McGuinty.
He resigned from cabinet October 11, 2005, following a police investigation involving his family's real estate development firm and was reinstated on May 23, 2006 after a judge ruled that there was no cause for including Sorbara's name on a search warrant.
Sorbara chaired the party's successful 2007 election campaign but announced on October 26, 2007 that he was leaving the cabinet to spend more time with his family but would continue as a backbench MPP.
On August 1, 2012, Sorbara announced that he was retiring from the legislature but would stay on as chair of the Liberal's election campaign.
Sorbara has been Chancellor of York University since June 2014, succeeding Roy McMurtry.