Sir Sidney Lee (December 5, 1859 - March 3, 1926) was an English biographer and critic.

He was born in London and educated at the City of London school and at Balliol College, Oxford, where he graduated in modern history in 1882. In the next year he became assistant-editor of the Dictionary of National Biography. In 1890 he became joint editor, and on the retirement of Sir Leslie Stephen in 1891 succeeded him as editor.

Lee himself contributed voluminously to the Dictionary, writing some 800 articles, mainly on Elizabethan authors or statesmen. While still at Balliol he had written two articles on Shakespearean questions, which were printed in The Gentleman's Magazine, and in 1884 he published a book about Stratford-on-Avon. His article on Shakespeare in the fifty-first volume (1897) of the Dictionary of National Biography formed the basis of his Life of William Shakespeare (1898), which reached its fifth edition in 1905.

In 1902, Lee edited the Oxford facsimile edition of the first folio of Shakespeare's Comedies, Histories and Tragedies, followed in 1902 and 1904 by supplementary volumes giving details of extant copies, and in 1906 by a complete edition of Shakespeare's works.

Lee received a knighthood in 1911.

Besides editions of English classics his works include a Life of Queen Victoria (1902), Great Englishmen of the Sixteenth Century (1904), based on his Lowell Institute lectures at Boston, Massachusetts, in 1903, and Shakespeare and the Modern Stage (1906).

Original text from 1911 Encyclopaedia Britannica