William Donald Stewart is a Canadian-born Italian former professional ice hockey defenceman and former coach. He played in the National Hockey League between 1977 and 1986, and then played in the Italian Serie A from 1986 to 1995. He later became a coach for the New York Islanders during the 1998–99 season. Internationally Stewart played for the Italian national team at the 1992 and 1994 Winter Olympics, and two World Championships.
- Occupation
- ice hockey player
- Citizenship
- Canada
- Born
- October 6, 1957
