John Roland Sweeney (June 20, 1931, Saint John, New Brunswick - died July 7, 2001, Kitchener, Ontario) was a Canadian politician and educator.
Sweeney moved to Ontario in his youth, and was educated at the University of Toronto, receiving a Bachelor of Arts degree and a Master's Degree in Education. A devout Roman Catholic, Sweeney served as the Waterloo Catholic District School Board's first director of education from 1969 until 1975 when he entered provincial politics with his election to the Legislative Assembly of Ontario as a Liberal Member of Provincial Parliament (MPP). Sweeney defeated Progressive Conservative Morley Rosenberg by 1,745 votes in Kitchener—Wilmot in the 1975 election, and was re-elected with increased majorities in the elections of 1977 and 1981.
He was a candidate in the 1982 Liberal leadership convention, but was eliminated on the first ballot, finishing last in a field of five candidates with only 122 votes.