The molecular formula C₂₁H₃₀O₂ (molecular mass: 314.46 g/mol) may refer to:

• Abnormal cannabidiol
• 17α-Allyl-19-nortestosterone
• Cannabichromene
• Cannabidiol
• Cannabinodiol
• 16-Dehydropregnenolone acetate
• 20α-Dihydrodydrogesterone
• 5α-Dihydrolevonorgestrel
• 5α-Dihydroethisterone
• Hydroxytibolones
  • 3α-Hydroxytibolone
  • 3β-Hydroxytibolone
• 17α-Methyl-19-norprogesterone
• Progesterone
• Retroprogesterone
• Tetrahydrocannabinol

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