Thomas Bernard "Windy" O'Neill (September 28, 1923 – February 13, 1973) was a Canadian professional ice hockey player who played 66 games in the National Hockey League with the Toronto Maple Leafs during the 1943–44 and 1944–45 seasons.

After his hockey career ended, O'Neill went to law school, becoming a successful Toronto lawyer.

He died of a heart attack on February 13, 1973, while dining at the Dell Restaurant in Toronto with his good friend, author Scott Young.

He had married and had five children, Thomas, Gregory, Emmett, Connie, and Christopher.

This biographical article relating to a Canadian ice hockey winger born in the 1920s is a stub.