Kildal is a surname. Notable people with the surname include:
Arne Kildal (1885–1972), Norwegian author, librarian and civil servant Birger Kildal (1849–1913), Norwegian attorney and businessman Karl Kildal (1881–1932), Norwegian equestrian Peter Kildal (bobsleigh) (born 1975), Norwegian bobsledder Peter Daniel B. W. Kildal (1816–1881), Norwegian politician Peter Wessel Wind Kildal (1814–1882), Norwegian merchant and industrialist