James Watt (1736–1819) was a Scottish engineer and inventor of a revolutionary new steam engine. James or Jim Watt may also refer to: James Watt junior (1769–1848), Scottish engineer, businessman and activist James Cromar Watt (1862–1940), Scottish artist, architect and jeweller Jim Watt (rugby union) (1914–1988), New Zealand rugby union player and paediatrician James Russell Watt (born 1935), New Zealand rugby union player Sir James Watt (Royal Navy officer) (1914–2009), British surgeon, Medical Director-General of the Royal Navy James G. Watt (born 1938), former US Secretary of the Interior (1981–83) Jim Watt (boxer) (born 1948), Scottish boxer Jim Watt (ice hockey) (born 1950), American ice hockey player James Watt (diplomat) (born 1951), British ambassador James Watt (loyalist) (born 1952), former Northern Irish loyalist paramilitary HMS James Watt (launched 1853), steam- and sail-powered Royal Navy ship named after the inventor James Watt College (founded 1908), Greenock, Scotland James Watt (actuary) (1863–1945), Scottish actuary and geographer James Watt (brewery owner), owner of BrewDog pub chain See also James Watts (disambiguation) Watt, James