• Trix (cereal), a breakfast cereal
• Trix (technical analysis), a technical analysis oscillator
• Trix (operating system), start for the first attempt at the GNU kernel
• Trix (construction sets), originally produced in Germany and later in the UK
• Trix (company), the German company that produced Trix construction and model train sets
• Kodak Tri-X, a popular brand of black-and-white photographic film from Kodak

Entertainment and the Arts

• Trix , a Japanese jazz fusion band
• Trix Records, a blues record label
• The Trix (Winx Club), a group of antagonists in the fictional series Winx Club
• Trix MacMillan, a fictional character in the "Eighth Doctor Adventures" novels based upon the "Doctor Who" television series
• Trix, a minor character from the movie Underworld
• Trix (Trillizas de oro), a pop group of blonde identical triplet girls
• Trix a radio station playing mostly unknown artists
• Trix,Trixs,Richie Trixs (Lighting Designer), a popular New York City nightclub lighting designer Richie Trixs
• Lorelai "Trix" Gilmore, a recurring character on the TV series Gilmore Girls
• Trix & Flix, the two official mascots for UEFA Euro 2008