Ermengol in Catalan, Armengol or Armengod in Spanish, Ermengaud in French, Ermengau in Occitan, and Hermengaudius in Latin is a Germanic given name of Gothic origin meaning "ready for battle". The name was Arabised during the Middle Ages as أرمقند, Armaqand.

It was also the surname of a late medieval family of the Languedoc: