"Let Me In" is the debut single by Young Buck, from his debut album, Straight Outta Cashville. It features 50 Cent and is produced by Needlz. The music video features cameo appearances by Lloyd Banks, Juvenile, Olivia, Stat Quo, David Banner, Slim Thug, Daz Dillinger, C-Note and D-Red from Botany Boyz and Lil Scrappy. B-Real from Cypress Hill freestyled to the song's beat for his song "Let Me Blaze" on his debut mixtape "The Gunslinger".

David Darnell Brown, better known by his stage name Young Buck, is an American rapper. He signed with Birdman's Cash Money Records in 1997, formed the hip hop collective UTP with Juvenile and Soulja Slim in 2001, and joined 50 Cent's group, G-Unit by 2003. He signed with the latter's parent label, G-Unit Records, an imprint of Interscope Records to release his debut studio album Straight Outta Cashville (2003) and its follow-up Buck the World (2007), both of which peaked at number three on the Billboard 200 and were met with critical praise.