John Challis (disambiguation)

John Challis (1942–2021) was a British actor.

John Challis is also the name of:
 * John Challis (activist) (born 1928), Australian activist
 * John Challis (harpsichord) (1907–1974), American musical instrument builder
 * John Henry Challis (1809–1880), Anglo-Australian merchant and philanthropist