XXX may refer to:

• XXX, an identifier for pornography, especially X-rated movies
• 30 (number), XXX in Roman numerals
• Super Bowl XXX, held in January 1996
• xXx, a 2002 action film starring Vin Diesel
• xXx: State of the Union, the 2005 sequel starring Ice Cube
• XXX (album), a 1999 album by the rock band ZZ Top
• .xxx, a proposed top-level domain intended as a voluntary option for sexually explicit sites on the Internet
• XXX, an alcohol level during prohibition
• XXX: Exklusibong, Explosibong, Exposé, a Philippine current affairs television show
• XXX, a generic depiction of Moonshine or other alcoholic beverage
• XXX, the ISO 4217 currency code for "no currency"
• ArXiv.org e-print archive, formerly known as xxx.lanl.gov
• XXX, an abbreviation for "kiss kiss kiss", commonly used in SMS, chat or text messaging
• XXX, an abbreviation for "i love you", commonly used in chat, short missives or love notes
• XXX, symbol of the straight edge lifestyle
• XXX, a shortened version of "XXXL", a plus size clothing size
• XXX, a reference to Amsterdam, after the three crosses on the Flag of Amsterdam
• XXX, a flavor of Vitamin Water

Triple X may refer to:

• Triple X syndrome, a chromosomal abnormality
• Triple X (professional wrestling), a wrestling stable in Total Nonstop Action Wrestling
• Triple X Wrestling, a professional wrestling promotion, based in Coventry, U.K.
• Triple X ESPN Radio, a trio of sports radio stations in the Washington, D.C. area
• Triple X Records of Los Angeles
• Triple X, a band which has covered "The X-Files" theme in 1996
• WXXX, a radio station in Vermont known as "95 Triple X"
• Triple X, the code name of ghost prisoner Hiwa Abdul Rahman Rashul
• Triple X, the code name for Anya Amasova, a character in the James Bond film The Spy Who Loved Me
• Triple X, an anime studio