Shachar Sagiv (Hebrew: שחר שגיב; born 11 October 1994) is an Israeli Olympic triathlete.

[2][3][4] His father is Shemi Sagiv (at the time known as Sabag), who represented Israel as a marathon runner at the 1984 Summer Olympics in Los Angeles, studied medicine, and is now a chiropractor, and his mother Rachela is a special education consultant.

[10] When he was 15 years old, Sagiv moved to Israel’s Wingate Institute in Netanya, and attended high school while he trained.

During his required military service with the Israeli Defense Forces he served in a special unit that allowed him to continue training and traveling to compete, while he also coached soldiers in special fighter units in power lifting and running.

[15][10] In October 2012, Sagiv won the gold medal in the 2012 Alanya European Triathlon Union (ETU) Junior European Cup in Alanya, Turkey, in the sprint triathlon competition (750-meter swim, 20-km bike, 5-km run) with a time of 53:31.

[16] In November 2013, he won the silver medal in the 2013 Israel Triathlon National Championships with a time of 2:05:26.

[16][26] In February 2024, he came in 4th in the World Triathlon Cup held in Napier, New Zealand, with a time of 49:50 minutes, one second behind third place.

[29][30] In August 2023, he competed in a pre-Olympic competition in Paris to become familiar with the Olympic course, and said: "I know what will happen; it is already imagined in my head.

But this is my role in the world, to represent Israel ... in the best possible way ... this is bigger than the personal goals that have accompanied me until today.