CK One by Calvin Klein is a citrus aromatic fragrance for women and men.

CK One was launched in 1994.

The noses behind this fragrance are Alberto Morillas and Harry Fremont. Top notes are pineapple, green notes, mandarin orange, papaya, bergamot, cardamom and lemon; middle notes are nutmeg, violet, orris root, jasmine, lily-of-the-valley and rose; base notes are sandalwood, amber, musk, cedar and oakmoss.