The Midknight Valencia orange is a South African variety of the Valencia orange. Its exact origin is unknown, however, around 1927, this variety was first noticed, growing among Valencia orange trees in an orchard at Addo, Eastern Cape, South Africa by A.P. Knight whom the orange was later named after. In following years, more observations were made documenting characteristics of the orange and coming to the conclusion that it should be considered a variety of the Valencia orange.