"Killa" is the first single by R&B American group Cherish from their second album The Truth. "Killa" features rap/hip-hop artist Yung Joc. The song is about "not being able to resist the man you know is no good." It is their third single after "Unappreciated" in 2006, and was described by noted UK R&B writer Pete Lewis of the award-winning Blues & Soul as "a robustly funky single which finds the girls teaming up with chart-topping rugged male Southern rapper Yung Joc".
The song was released to iTunes on November 27, 2007. The video premiered via BET's Access Granted on December 12, featuring some scenes of the movie Step Up 2: The Streets. The video was directed by Little X.
It was originally announced that there would be a So So Def remix featuring Jermaine Dupri and Rocko. However, even though Dupri was on the remix, Rocko was absent, the other collaborator being The Kid Slim.