Harry Bayne Whiteside (4 July 1909 – 18 May 1984) was a Liberal party member of the Canadian House of Commons. He was born in Pasqua, Saskatchewan and became a farmer by career.Whiteside was educated in Sceptre, Saskatchewan and at Regina. From 1943 to 1945, he was a trustee for Sceptre School District #3678. After this until 1947, he was reeve of rural municipality Clinworth No. 230, Saskatchewan.He was first elected to Parliament at the Swift Current riding in the 1949 general election.