Undercover is the practice of disguising one's identity in an investigation.
It may also refer to:
In music:
- Under Cover, a 2005 album by Ozzy Osbourne
- Undercover (album), a 1983 album by The Rolling Stones
- Undercover, a 2003 album by the German band the Puhdys
- "Undercover", a bonus track included on the iTunes release of Nelly Furtado's 2006 Loose (album)
- Undercover (band), a Christian rock band from the United States
- Undercover (dance group), a dance music act who had two top 10 hits in the UK in 1992 with "Baker Street" and "Never Let Her Slip Away"
Other uses:
- Undercover (film), a 1943 British war film made by Ealing Studios in London on the Yugoslav guerrillas in Serbia, released in the U.S. in 1944 as Underground Guerrillas by Columbia Pictures
- "Under Covers", an episode of the television series NCIS
- Under Cover (TV series), a 1990s television series
- Need for Speed: Undercover, the latest release of Electronic Arts' Need for Speed series
- Undercover (Life on Mars), the final episode of the British television drama, Life on Mars
- Undercover (movie), an Australian film about the Berlei "foundation garment" company
- Undercover (clothing brand), (sometimes called Undercoverism), Japanese streetwear clothing brand founded by Jun Takahashi
