Secret Weapon or Secret Weapons may refer to:

• Alex Rider: Secret Weapon, a 2003 short story and 2018 collection
• Las armas secretas, a 1959 short story collection by Julio Cortázar
• The Last of the Jedi: Secret Weapon, a 2007 book and the seventh in the Last of the Jedi series

• Secret Weapon (group), an 80s R&B band
• Secret Weapons (band), a 2010s American musical band
• Secret Weapon (album), a 2007 MxPx album and its title track

• Secret Weapon (film), a 1990 historical film
• "Secret Weapons", a second-season Danny Phantom episode
• "Secret Weapons" (Star Wars: The Clone Wars)

• Secret Weapons of World War II (disambiguation)
• Concealed carry