James Todd Smith (born January 14, 1968), known professionally as LL Cool J (short for Ladies Love Cool James), is an American rapper, songwriter, record producer, and actor. With the breakthrough success of his single "I Need a Beat" and the Radio LP, LL Cool J became an early hip hop act to achieve mainstream success along with Kurtis Blow and Run-DMC.

LL Cool J has released 13 studio albums and two greatest hits compilations. His twelfth album Exit 13 (2008), was his last for his long-tenured deal with Def Jam Recordings. LL Cool J has appeared in numerous films, including Halloween H20, In Too Deep, Any Given Sunday, Deep Blue Sea, S.W.A.T., Mindhunters, and Edison. He currently plays NCIS Special Agent Sam Hanna in the CBS crime drama television series NCIS: Los Angeles. LL Cool J also is the host of Lip Sync Battle on Paramount Network.A two-time Grammy Award winner, LL Cool J is known for hip hop songs such as "Going Back to Cali", "I'm Bad", "The Boomin' System", "Rock the Bells", and "Mama Said Knock You Out", as well as R&B hits such as "Doin' It", "I Need Love", "All I Have", "Around the Way Girl" and "Hey Lover". In 2010, VH1 placed him on their "100 Greatest Artists Of All Time" list. In 2017, LL Cool J became the first rapper to receive the Kennedy Center Honors. In 2021, he was inducted into the Rock and Roll Hall of Fame with an award for Musical Excellence.