Oldys is a surname. Notable people with the surname include:
Henry Oldys (1859–1925), American ornithologist, father of Robert Olds Robert Olds (1896–1943), American officer and military theorist born Robert Oldys, son of Henry Oldys and father of Robin Olds Robin Olds (1922–2007), American pilot and officer born Robert Oldys Jr., son of Robin Olds William Oldys (1696–1761), English antiquarian and bibliographer
See also Oldies