Cornelis Evertsen the Youngest (Flushing, 16 November 1642 – 16 November 1706) is a Dutch admiral of the 17th century.

Cornelis is the second son of Lieutenant-Admiral Cornelis Evertsen the Elder, nephew of Lieutenant-Admiral Johan Evertsen and cousin of the latter's son Vice-Admiral Cornelis Evertsen the Younger, with whom he is very often confused.

Cornelis is nicknamed Keesje den Duvel ("Little Cornelis the Devil") for his cantankerous and hot-tempered character, which he shares with his father.