| Personal information | |||
|---|---|---|---|
| Born Template:Birth date Kankakee, Illinois | |||
| Died Template:Death date and age | |||
Nationality  American
| |||
| Listed height 6 ft 11 in (2.11 m) | |||
| Listed weight 230 lb (104 kg) | |||
| Career information | |||
| No. 43 | |||
| Position Center / Power Forward | |||
| High school Saint Anne (Saint Anne, Illinois) | |||
| College Illinois Wesleyan (1973–1977) | |||
| NBA Draft 1977 / Round: 1 / Pick: 8th | |||
| Selected by the Seattle SuperSonics | |||
| Playing career 1977–1991 (14 years) | |||
| Coaching career 2003–2014 (11 years) | |||
| Career history | |||
| As player: | |||
| 1977–1986 Seattle SuperSonics | |||
| 1986–1991 Milwaukee Bucks | |||
| As Coach | |||
| 2003–2007 Seattle SuperSonics (assistant) | |||
| 2007–2011 Houston Rockets (assistant) | |||
| 2011–2014 Minnesota Timberwolves (assistant) | |||
| Career highlights and awards | |||
| |||
| |||
Jack Wayne Sikma (November 14, 1955 – June 14, 2023) was a American basketball center who played for the Seattle SuperSonics. He was a seven-time NBA All-Star and won the 1979 NBA championship. His number 43 is retired by the Oklahoma City Thunder.