Indefatigable may refer to:
Ships , several ships of the name in the British Royal Navy , a British training ship
Indefatigable (1799 ship), a merchant ship used to transport convicts to Australia Indefatigable ( "The Indie"), a key ship in the Horatio Hornblower series of novels by C. S. Forester
Other uses Indefatigable gas field, a petroleum gas field Indefatigable SW, a petroleum gas field; see Bacton Gas Terminal Indefatigable Island, in the Galapagos Mount Indefatigable, a mountain in Canada