CH2N2 may refer to:

  • Cyanamide, an organic compound
  • Diazirine, class of organic molecules with a cyclopropene-like ring, 3H-diazirene
  • Diazomethane, chemical compound discovered in 1894
  • Isodiazomethane, parent compound of a class of derivatives of general formula R2N–NC
  • Nitrilimine, class of organic compounds sharing a common functional group with the general structure R-CN-NR