Sverre Arnljot Breste Kjeldstadli (14 February 1916 – 28 March 1961) was a Norwegian historian.
During World War II he was a courier for Milorg.
His dr.philos.
thesis from 1959, Hjemmestyrkene.
Hovedtrekk av den militære motstanden under okkupasjonen, has been an inspiration for later works by other historians.He was a son of trade unionist Lars Kjeldstadli (1870–1934) and his wife Beate, (born Lotsberg, (1880–1965).
He was a son-in-law of Daniel Grini, and together with Ellen Helvig Grini (1918–2001) he had the son, historian Knut Kjeldstadli.