Mark Lorne Bonnell (January 4, 1923 – October 9, 2006) was a Canadian physician, provincial politician and senator.
Born in Hopefield, Prince Edward Island, the son of Lottie and Harry Bonnell, he received his Doctor of Medicine from Dalhousie University in 1949.
In 1951, he was elected to the Legislative Assembly of Prince Edward Island representing the district of 4th Kings.
His grandfather, Mark Bonnell, was also a member of the Legislative Assembly of Prince Edward Island.
In 1971, he was appointed to the senate representing the senatorial division of Murray River, Prince Edward Island.