The son of a London mercer, Henry Lok (Lock) was educated at Oxford. Skilled in ciphers, he was employed as an agent for Robert Cecil. Lok was imprisoned for debt in 1606 and 1608. He was the author of hundreds of sonnets, both ecclesiastical and secular, many in the Spenserian form.
Sundry Christian passions contained in two hundred sonnets. 1593.
Ecclesiasticus; sundry psalms of David. 1597.
Poems, ed. A. B. Grosart. 1870.