全名傑克-韋恩-西克瑪（Jack Wayne Sikma）1955年11月14日出生於伊利諾州坎卡基，退役美國職業籃球運動員，在他打球的日子裡，他以一頭獨特的金色卷發聞名。
大學時代，西克瑪效力於伊利諾衛斯理大學，在那裡他成為了Sigma Chi兄弟會的一員。他參加了1977年選秀，在第八順位被西雅圖超音速隊選中。他進入了NBA最佳新秀陣容。他曾經7次入選NBA全明星陣容（從1979年至1985年），還在1979年隨超音速隊拿到了總冠軍，那時西克瑪曾經和很多天才球員搭檔，其中有丹尼斯-詹森（Dennis Johnson）、格斯-威廉士（Gus Williams）和老將保羅-西拉斯（Paul Silas）。Sikma always averaged double figures in points-per-game throughout his career, and after his stint with the Sonics, he maintained consistent numbers while playing with the Milwaukee Bucks in his final five seasons. For his career, Sikma scored 17,287 points and grabbed 10,816 rebounds.
Sikma was one of the most accurate shooting centers in NBA history. He holds the rare distinction of leading the league in free throw percentage (92.2%) while playing the center position during the 1987–88 season and averaged 84.9% for his career. Sikma also made over 200 three-pointers during his career with a 32.8% three-point percentage.
Along with his accurate shooting, Sikma led the league in defensive rebounds in both 1981–82 and 1983–84 while playing in Seattle.
Sikma later served as an assistant coach with the SuperSonics.[1]
Sikma's son, Luke, is currently a forward for the University of Portland Pilots.
