William Meriton Eaton, 2nd Baron Cheylesmore (15 January 1843 – 10 July 1902) is best remembered as a leading collector of English mezzotint portraits, and collector of other art. His mezzotints and other prints, over 10,000 in number, were left to the British Museum, and five oil paintings to the National Gallery, London. He also stood unsuccessfully for Parliament for the Conservative Party at Macclesfield in 1868, 1874 and 1880, and held a nominal partnership in the family silk business.
As his elder brother had predeceased him, he became 2nd Baron Cheylesmore, which is pronounced "Chylsmore", in 1891 on the death of his father Henry William Eaton, 1st Baron Cheylesmore (1816–1891). He never married, and was succeeded by his younger brother Herbert, a major-general and sportsman.