Simu Liu (/ˈsiːmuː ˈliːjuː/ SEE-moo LEE-yoo; simplified Chinese: 刘思慕; traditional Chinese: 劉思慕; born 19 April 1989) is a Canadian actor. He rose to prominence by starring as Shang-Chi in the Marvel Cinematic Universe, debuting in Shang-Chi and the Legend of the Ten Rings (2021).

Liu was born in Harbin, China, and raised in Mississauga, Ontario. He has also played Paul Xie in the Omni Television crime drama series Blood and Water—for which he was nominated for a Canadian Screen Award and an ACTRA Award—Jung Kim in the CBC Television sitcom Kim's Convenience (2016–2021), and one of the Ken dolls in the fantasy comedy film Barbie (2023). In 2022, Liu published the memoir We Were Dreamers and was named one of Time magazine's 100 most influential people in the world.