Jonathan Yong Kim (born 5 February 1984) is an American U.S. Navy lieutenant commander, former SEAL, flight surgeon, Naval aviator, physician, and NASA astronaut.

The family opened a liquor store in South Los Angeles, and his mother worked as a substitute elementary school teacher while raising Kim and his younger brother.

Kim received a Bachelor of Arts, summa cum laude, in mathematics from the University of San Diego in 2012, and a Doctor of Medicine from Harvard Medical School in 2016.

[8] Kim learned about and decided to become a Navy SEAL at age 16, investing his remaining high-school years physically conditioning himself for the rigors of Special Warfare training.

"[4] After enlisting with the United States Navy in 2002 as a seaman recruit, Kim graduated BUD/S class 247 and was assigned to SEAL Team 3 with the rating Special Warfare Operator.

[7] According to Jocko Willink, Kim's Silver Star was awarded for rescuing multiple wounded Iraqi soldiers in the face of enemy fire.

[12] In August 2024, NASA announced that Kim was scheduled as a member of the Expedition 72/73 crew to the International Space Station, launching aboard the Soyuz MS-27 spacecraft in March 2025.