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Dauntless may refer to:
Military
- Douglas SBD Dauntless, a World War II American naval scout plane and dive bomber
- Operation Dauntess, a military operation part of Operation Courageous
- Operation Martlet (a.k.a. Operation Dauntless), part of a series of British attacks to capture the town of Caen and its environs from German forces
Vessels
- Dauntless (steamboat), a steamer in the Puget Sound mosquito fleet
- , five ships and one shore establishment of the Royal Navy
- , a United States Coast Guard cutter
- , three ships of the United States Navy
- Dauntless wooden yacht schooner built in 1866
Fictional
- Dauntless, a fictional sailboat in children's books by James Lennox Kerr
- Dauntless, a fictional starship in The Lost Fleet: Dauntless by John G. Hemry
- HMS Dauntless, a fictional ship-of-the-line from the 2003 American fantasy swashbuckler film Pirates of the Caribbean: The Curse of the Black Pearl
- USS Dauntless (NX-01-A), a fictional starship from the fourth season Star Trek: Voyager episode "Hope and Fear"
Other
- Dauntless (board game), a board wargame simulating aerial combat in World War II
- Dauntless (video game), a free-to-play action role-playing video game
- Dauntless: The Battle of Midway, a 2019 American film, directed by Mike Phillips
- Dauntless, one of the five factions in the Divergent novel and film series
- Archibald Dauntless, a fictional hobo portrayed by Lily Tomlin in The Magic School Bus special A Magic School Bus Halloween
- A premium, American-made, wood-fired evaporator manufactured by Smoky Lake Maple Products.
- Callsign of Lynx Air, a Canadian low-cost carrier.