Redl is a surname. Notable people with the surname include:
Alfred Redl (1864–1913), Austrian officer and spy Alfred Redl (judoka) (born 1940), Austrian judoka Barbara Redl (born 1968), Austrian actress Christian Redl (born 1948), German actor Doug Redl (born 1956), Canadian football player Erwin Redl (born 1963), Austrian artist Gerhard Redl (born 1962), Austrian bobsledder Hans Redl (1914–76), Austrian tennis player Mark Redl (born 1993), German footballer Michael Redl (1936–2013), German handball player Scott Redl (born 1961), Canadian football player Vlasta Redl, Czech folk musician