Krokus may refer to:

• Krokus (band), a hard rock/heavy metal band from Switzerland
  • Krokus (album), 1976 self-titled debut album by Krokus
• Krokus (mythology), a companion of Hermes in Classical mythology

• Crocus, a genus of perennial flowering plants
• Chrocus, a 3rd-century Alamanni leader
• CROCUS, a nuclear reactor operated by the École polytechnique fédérale de Lausanne