Gregory Francis Thompson, PC (March 28, 1947 – September 10, 2019[1]) was a Canadian politician who served six terms as a Member of Parliament (MP), and for one term he represented the district of Saint Croix in the New Brunswick Legislative Assembly, from 2018 until 2019.

His bid for re-election in the 1993 Canadian federal election was unsuccessful and he was defeated by Harold Culbert of the Liberal Party of Canada by fewer than 1,000 votes.

On February 6, 2006, he was appointed Minister of Veterans Affairs in Stephen Harper's Cabinet.

Among the cases where privacy issues were investigated is that in which highly personal information of an outspoken critic of Veterans Affairs, including confidential medical and financial information, was included in briefing notes prepared for then-minister Greg Thompson.

[6][7][8] In 2018 Thompson ran provincially under the Progressive Conservatives in the riding of Saint Croix and won.