Ottorino Volonterio (7 December 1917 – 10 March 2003) was a racing driver from Switzerland.
He was born in Orselina and was trained as a lawyer, before he began participating in sports car racing.
He debuted in Formula One at the 1954 Spanish Grand Prix on 24 October 1954 in a Maserati 250F, but was not successful in the three World Championship Grands Prix he entered, and only finished the Italian Grand Prix 15 laps behind the winner.