Leonard Harapiak (born July 4, 1942) is a Manitoba politician.
After Pawley's government lost a vote of confidence in 1988, Harapiak ran for the Manitoba NDP leadership and did better than expected. He believed he had a chance of winning after placing a strong second on the first ballot, but was defeated by Gary Doer on the third by 21 votes. He was defeated by Tory Parker Burrell in the general election which followed.
Harapiak subsequently left politics, and worked as a director at the Winnipeg Technical Centre. His sister, Rosann Wowchuk, was appointed as a cabinet minister in Gary Doer's government in 1999.
He is also the brother of agronomist John Harapiak and Harry Harapiak.