Shem-Tov "Shemi" Sabag; later known by the surname Sagiv[1][2] (Hebrew: שם טוב "שמי" סבג; born April 13, 1959) is an Israeli former Olympic marathoner, former triathlon coach, and currently a chiropractor.

[5][2][6][7] He started running marathons at age 17, at the urging of a high school coach, but lost three years of training as he served with a tank unit in the Israel Defense Forces.

[10][11][1] His son Shachar, whom he coached until 2021, will represent Israel at the 2024 Summer Olympics in Paris in the Men's triathlon at Pont Alexandre III on July 30, 2024.

[16] From 1986 to 1989 he studied biomechanics and gait analysis as a graduate student at the University of Oregon, earning a master's degree.

[16][17][18][19][20] From 1989 to 1993 he studied at the University of Western States in Portland, Oregon, earning a Doctor of Chiropractic degree, and is now a chiropractor.

[22][23] In November 1983, he came in 8th in the NCAA Men's Division III Cross Country Championship in Newport News, Virginia.

[33][34][35] In the mid-1980s, after transferring, he ran for the University of Oregon Ducks track and field team, under coach Bill Dellinger.

[33] Also that month, he won the New York Road Runners Club Back-To-Work 4-Mile Run in 19 minutes, 10 seconds in Central Park.