S.M. Entertainment (Hangul: SM엔터테인먼트) is a South Korean entertainment company established in 1995 by Lee Soo-man. It is currently one of the largest entertainment companies in South Korea. The company operates as a record label, talent agency, music production company, event management and concert production company, and music publishing house.

The label is home to prominent K-pop artists such as BoA, S.E.S., TVXQ, Super Junior, Girls' Generation, SHINee, f(x), EXO, Red Velvet, NCT, and formerly to pioneering groups H.O.T., Fly to the Sky, and Shinhwa. It also manages a number of actors, including Go Ara and Lee Yeon-hee. In Japan, S.M. Entertainment co-publishes Avex Trax releases for artists including Ayumi Hamasaki, Namie Amuro, and Koda Kumi, as well as Johnny's Entertainment artists such as Arashi and KAT-TUN.

In 2015, S.M. Entertainment had reported revenues of KR₩325 billion (approximately US$287 million) and a net income of KR₩21.7 billion (US$19 million).