Doppelgangster (often written with an umlaut; or stylised with the signature 'Three Dot' umlaut) is a UK/Australian experimental performance company that has been recognised internationally for its ecologically and socially engaged practice, which includes site-specific theatre, one-to-one encounters, and subversive political interventions. The company has been recognised by the International Network for Contemporary Performing Arts] (IETM) and the French Coalition for Art and Sustainable Development (COAL) for "creating cultural responses to climate change, forced migration and globalisation using technology to extend their reach to new audiences".