William Ramsay (1852–1916) was a Scottish chemist who discovered the noble gases.
William Ramsay may also refer to: William Ramsay (astrologer) (fl. 1660), English physician and astrologer William Maule, 1st Baron Panmure (1771–1852), Scottish peer (until 1782 named the Hon. William Ramsay) Bill Ramsay (born 1929), American jazz saxophonist and band leader based in Seattle Bill Ramsay (politician) (born 1962), politician in Newfoundland, Canada Bill Ramsay (athlete) (1928–1988), Australian athlete William Ramsay (classical scholar) (1806–1865), professor of humanity in the University of Glasgow 1831–63 William Ramsay (MP) (1809–1850), Scottish MP for Midlothian and Stirlingshire William Mitchell Ramsay (1851–1939), Scottish archaeologist and New Testament scholar William Ramsay (manufacturer) (1868–1914), Australian manufacturer who invented Kiwi shoe polish William Ramsay, 1st Earl of Dalhousie (died 1672), Scottish nobleman, army officer and politician William Norman Ramsay (1782–1815), Scottish cavalry officer in the British Army, killed in action at Waterloo William Ramsay (Royal Navy officer) (1796–1871), Scottish admiral in the Royal Navy
See also Sir William Ramsay School, school in Hazlemere, Buckinghamshire, named after the chemist William Ramsey (disambiguation) Wilhelm Ramsay, geologist