Heptanone may refer to the following ketones with seven carbon atoms the formula C₇H₁₄O:

• 2-Heptanone (Methyl amyl ketone)
  • 5-Methyl-2-hexanone (Methyl isoamyl ketone)
  • 4-Methyl-2-hexanone (Methyl 2-methylbutyl ketone)
  • 3-Methyl-2-hexanone (Methyl 1-methylbutyl ketone)
  • 3,3-Dimethyl-2-pentanone
  • 4,4-Dimethyl-2-pentanone (Methyl neopentyl ketone)
  • 3,4-Dimethyl-2-pentanone
  • 3-Ethyl-2-pentanone
• 3-Heptanone
  • 2,4-Dimethyl-3-pentanone (Diisopropyl ketone)
  • 2,2-Dimethyl-3-pentanone
  • 2-Ethyl-3-pentanone
• 4-Heptanone
  • 2-Methyl-3-hexanone (Isopropyl propyl ketone)
  • 4-Methyl-3-hexanone (Ethyl sec-butyl ketone)
  • 5-Methyl-3-hexanone (Ethyl isobutyl ketone)

• Cycloheptanone
  • Methylcyclohexanone
    • 2-Methylcyclohexanone
    • 3-Methylcyclohexanone
    • 4-Methylcyclohexanone