Sir John Hare (16 May 1844 – 28 December 1921), born John Joseph Fairs, was an English actor and theatre manager of the later 19th– and early 20th centuries.
Born and brought up in London, with frequent visits to the West End, Hare had a passion for the theatre from his childhood. After acting as an amateur as a young man he joined a professional company in Liverpool, before making his London debut in 1865 at the age of 21 with Marie Wilton's company. Wilton was a pioneer of naturalistic theatre, with which Hare was greatly in sympathy, and he quickly gained a reputation in character roles, particularly in comedies.
Within a decade Hare was well enough established to go into management. He was in partnership with the actor W. H. Kendal at the Court Theatre from 1875 to 1879, and from 1879 to 1888 at the St James's Theatre with Kendal and the latter's wife, Madge. They presented, mostly successfully, a succession of new British plays, adaptations of French works, and revivals. At the Garrick Theatre from 1888 to 1895 Hare had a solo managerial career, after which he concentrated on acting – in the US, on tour in the British provinces, and in the West End. Among the playwrights with whom Hare was closely associated were T. W. Robertson, W. S. Gilbert and Arthur Wing Pinero.
Hare was admired for his carefully observed characterisations, his comedic flair and his handsomely-mounted productions. He was knighted in 1907, and died in London in 1921 at the age of 77, four years after his last stage appearance.