Exon (disambiguation)

Exon may refer to:
 * Exon, a region of DNA that is represented in the mature form of RNA
 * Exoribonuclease or ExoN, an RNA degrading enzyme
 * Exoniensis or Exon., the Post-Nominal Letters for alumni / degrees from the University of Exeter
 * Exon can also refer to the signature of the Bishop of Exeter
 * J. James Exon (1921–2005), American politician
 * Nat Exon (born 1992), Australian rules footballer
 * Exon is a rank for an officer in the Yeomen of the Guard

It may also be a spelling error for:
 * ExxonMobil, the energy company
 * Exxon, a brand of fuel sold by ExxonMobil