Henry Thomas "Harry" May (1 August 1892 – 13 May 1972) was an Australian politician who was a Labor Party member of the Legislative Assembly of Western Australia from 1947 to 1968, representing the seat of Collie.

In May 1915, May enlisted in the Australian Imperial Force, serving in the Gallipoli Campaign as a private in the 2/28th Battalion.

He was discharged from service in August 1916, sick with enteric fever, and afterward worked as a clerk for the federal Repatriation Department.

He eventually settled in Collie, working a variety of roles in the coal industry.

[2] After Labor's victory at the 1953 election, May was appointed chief whip in the government of Albert Hawke.