Arachchi was a petty native headman in Ceylon (Sri Lanka) during the colonial era.
Arachchi may also refer to:
People Bimshani Jasin Arachchi, Sri Lankan police officer Lakshman Nipuna Arachchi, Sri Lankan politician Migapulle Arachchi, Sri Lankan feudal lord
Other uses Maggona Arachchi, Sinhalese speaking Khandayat ethnic group of Sri Lanka Vidane Arachchi, titlee