William John Tobin (May 20, 1895 – May 8, 1963) was a Canadian ice hockey player, executive and head coach.

He was a senior executive with the Chicago Black Hawks for the team's first 36 years of existence, also serving as coach for parts of two seasons.

He was survived by his wife Muriel, son Donald W. and daughter Mrs. Elaine Bovaird, all of Chicago, and two sisters, Mrs. Maude Sunderland and Mrs. Gertrude Ashe, both of Ottawa.

Founder and owner Major Frederic McLaughlin made Tobin his assistant and head of hockey operations.

[1] He remained vice president and head of hockey operations until 1954, when Tommy Ivan became general manager.