Luka Šamanić (born 9 January 2000) is a Croatian professional basketball player for the San Antonio Spurs of the National Basketball Association (NBA). A power forward, he was drafted 19th overall by the Spurs in the 2019 NBA draft.
A native of Zagreb, Šamanić started his youth career with the homonymous basketball club. In 2016, at age 16, he moved to Barcelona, Spain, where he joined the FC Barcelona's reserve team in the Spanish second-tier league. Šamanić has represented Croatia multiple times in FIBA events, leading his team to a gold medal at the FIBA Europe Under-18 Championship Division B in 2017, while earning most valuable player honors.