The Secret Agent: A Simple Tale is a 1907 novel by Joseph Conrad, relating a bleak and darkly comic story of spies, terrorists, anarchists and agents provocateurs plotting and counter-plotting in the back streets of London in the early 20th century. It...

A secret agent is a spy, a person that is engaged in espionage. Secret agent may also refer to:

Danger Man, a British television series broadcast under the title Secret Agent in the U.S.

"Secret Agent Man", the theme song used for American broadcasts of the above.

Secret Agent (1947 film), a 1947 film by Boris Barnet

Secret Agent (video game), a computer game by Apogee Software

Secret Agent Man, a 2000's US TV series unrelated to Danger Man.

Secret Agent (1936 film), a 1936 film by Alfred Hitchcock

Secret Agent (album), an album by Robin Gibb

The Secret Agent, novel by Joseph Conrad

Secret Agent, an album by Judie Tzuke

"The Secret Agent", a song by Hawkwind from Electric Tepee