A trident is a three-pronged staff.

Trident may also refer to:

• The Trident, a mountain in South Georgia

• Trident, West Yorkshire, a civil parish and community in the City of Bradford

• Trident, Arkansas
• Trident Technical College, a college in Charleston, South Carolina
• Trident, Montana, a ghost town

• Trident (crater), a crater in Taurus-Littrow valley on the Moon

• Trident (missile), a submarine-launched ballistic missile used by the United States and the United Kingdom
  • Trident (UK nuclear programme), based on the Trident missile
• French ship Trident (1811), a Téméraire-class ship of the French Navy
• HMS Trident (1768), a 64-gun third-rate ship of the line
• HMS Trident (1845), a sloop built by Ditchburn & Mare
• HMS Trident (N52), a T-class submarine built in 1937
• USS Trident (AMc-107), a World War II US Navy minesweeper
• SNCASO Trident, a French prototype interceptor aircraft
• Operation Trident (1971), the codename for an Indian Navy action during the Indo-Pakistani War
• Washington Conference (1943) or Trident, a strategic meeting between the United States and the United Kingdom during World War II

• MSHTML (Trident), a browser engine in Internet Explorer
• Trident Microsystems, a former graphics chip manufacturer
• Project Trident, a desktop edition spin off of a TrueOS operating system

• Trident Comics, a former publisher of British comic books
• Trident (UK comics), an anthology comic book
• Trident (DC Comics), a DC Comics character
• Trident Corporation, a fictional corporation in Spriggan

• Peel Trident, a British microcar made by the Peel Engineering Company
• Trident Cars, a British sports car manufacturer
• BSA Rocket 3/Triumph Trident, a 1960s/1970s British motorcycle made by Triumph Engineering, Meriden
• Triumph Trident, a 1990s British motorcycle made by Triumph
• Dennis Trident 2, a 2-axle bus model manufactured by Dennis Specialist Vehicles
• Dennis Trident 3, a 3-axle bus model manufactured by Dennis Specialist Vehicles
• Hawker Siddeley Trident, an aircraft designed by de Havilland
• Trident (spacecraft), a space mission concept to the outer planets proposed as a part of NASA's Discovery program

• Trident (McCoy Tyner album) (1975)
• Trident (Kingfish album) (1978)
• Trident Studios, a recording studio in Soho
• Trident (label), a record label of The Trip
• Trident (Japanese band), a band composed of Mai Fuchigami, Manami Numakura, and Hibiku Yamamura, based on TV anime series Arpeggio of Blue Steel

• Trident (spacecraft), proposed space mission to the outer planets as part of NASA's Discovery Program for launch in 2025/2026
• Trident curve, an algebraic curve
• Trident laser, a high-power short pulse laser facility at Los Alamos National Laboratory
• TRopIcal DEep-sea Neutrino Telescope, a proposed neutrino detector in the South China Sea

• The Trident (restaurant), in Sausalito, California, United States
• Le Trident (theatre), Cherbourg, France
• Trident (gum), a sugarless chewing gum manufactured by Perfetti Van Melle BV and formerly by Mondelēz International Group
• Operation Trident (1971), an offensive operation by the Indian Navy against the city of Karachi during the Indo-Pakistani War of 1971
• Operation Trident (Metropolitan Police), a Metropolitan Police Service unit dealing with gun crime in London
• Trident Racing, a motor racing team
• Trident University International, an online school for higher education
• Trishul (film), or Trident, a 1978 Indian film directed by Yash Chopra

• HMS Trident, a list of ships of the Royal Navy
• Trident submarine (disambiguation), a common name for the British Vanguard-class and American Ohio-class Trident missile-armed submarines
• Trishul (disambiguation), a symbol in Indian religions
• Tryzub, the coat of arms of Ukraine