Social intelligence is a construct that has shown promising practical applications, but its use in research and applied settings has been limited by definitional problems and the complexity of most existing measures of social intelligence. The goal of the present study was to adapt the Italian version [Gini & Iotti (2004) La Tromsø Social Intelligence Scale: Traduzione e adattamento alla popolazione Italiana. Italy: University of Padova.] of the Tromsø Social Intelligence Scale, TSIS [Silvera, Martinussen, & Dahl (2001). Scandinavian Journal of Psychology, 42, 313-319.] to the adolescent population (the sample comprised 320 Italian adolescents, 132 boys and 188 girls). Our analyses revealed the same factorial structure of the original scale and showed a good internal reliability. The items of the TSIS-IV were reasonably unbiased in terms of social desirability response bias.