Arjen is a given name. Notable people with the name include:
Arjen Anthony Lucassen (born 1960), Dutch composer and musician
Arjen Lenstra (born 1956), Dutch mathematician
Arjen Lubach (born 1979), Dutch comedian
Arjen Robben (born 1984), Dutch footballer who plays for Bayern Munich
Arjen Roelofs (1754–1828), Dutch astronomer
Arjen Teeuwissen (born 1971), Dutch equestrian
Arjen Stroeven (born 1963), Dutch physical geographer
