CK One by Calvin Klein is a Citrus Aromatic fragrance for women and men launched in 1994 by Alberto Morillas and Harry Fremont.

Top notes are Lemon, Green Notes, Bergamot, Mandarin Orange, Pineapple, Cardamom and Papaya.

Middle notes are Lily-of-the-Valley, Jasmine, Violet, Rose, Nutmeg, Orris Root and Freesia.

Base notes are Green Accord, Musk, Cedar, Green Tea, Sandalwood, Oakmoss and Amber.