Ilsley is both a surname and a given name. Notable people with the name include:
Surname Blaise Ilsley (born 1964), American baseball coach and pitcher Daniel Ilsley (1740–1813), American politician (Representative from Massachusetts) Edward Ilsley (1838–1926), British Roman Catholic Archbishop of Birmingham, England Harry P. Ilsley (1884-1953), American judge George Ilsley (1928–2016), Australian rules footballer George K. Ilsley (born 1958), Canadian writer of gay literature James Lorimer Ilsley (1894–1967), Canadian politician
Given name Ilsley Boone (1879–1968), promoter of nudism in the USA