Ulfeldt is a surname. Notable people with the surname include:
Corfits Ulfeldt (naval officer) (died 1644), Danish naval officer, a cousin of the more famous Corfitz Ulfeldt (1606–1664)
Corfitz Ulfeldt (1606–1664), Danish statesman, was the son of the chancellor Jacob Ulfeldt
Jacob Ulfeldt (1535–1593), Danish diplomat and member of the Privy Council from 1565
Leonora Christina Ulfeldt (1621–1698), the daughter of King Christian IV of Denmark