Big L may refer to:

• Lamont Coleman (1974–1999), better known as Big L, American hip-hop artist
• "The Big L", a single from Swedish duo Roxette's third studio album, Joyride (1991)

Or a number of British radio stations:

• Wonderful Radio London, an American-owned offshore radio station broadcasting to Britain and Europe (1964–1967)
• Radio Luxembourg's English-language programmes in the late 1960s and early '70s
• Big L 1395, a British radio station inspired by Wonderful Radio London