Portuguese born, Sofia Diniz studied music and cello in Lisbon and later specialized in historical performance practice in Cologne, Germany with Rainer Zipperling (baroque cello and viola da gamba), in Den Haag, Netherlands with Wieland Kuijken and Philippe Pierlot (viola da gamba) and Brussels, Belgium with P. Pierlot.

She works as a freelance gamba player throughout Europe and beyond with several early music ensembles and orchestras like The Spirit of Gambo (Freek Bortslap), Il Fondamento (Paul Dombrecht), Ricercar Consort (Philippe Pierlot), Collegium Vocale Gent (Philippe Herreweghe), Hisperion XXI (Jordi Savall), Ludovice Ensemble (Fernando Miguel Jalôto), Sete Lágrimas (Filipe Faria e Sérgio Peixoto) or Concerto Köln.

She has played in several recordings with Sete Lágrimas for the label MU, for MIRARE with Ricercar Consort (Philippe Pierlot), for AliaVox with Hisperion XXI (Jordi Savall), for Harmonia Mundi with Collegium Vocale Gent and Concerto Palatino (Philippe Herreweghe), and some live recordings, like of Purcells Dido and Aeneas for ARTE with Ricercar Consort and Collegium Vocale Gent (Philippe Pierlot).

Sofia Diniz is based in Cologne, Germany, and she plays a seven string viol made by François Bodart (2007), copy of a Barak Norman model (London, 1700), a seven string copy of a Collichon (Paris ca. 1680) by Henner Harders (2001), and a treble viol by François Danger (2000).