The patrons of San Quirico d'Orcia are Saints Quiricus and Julietta, celebrated on 16 June in the collegiate church dedicated to them.
On the third Sunday of June comes the Festa del Barbarossa, in which the four districts of Borgo, Castello, Canneti and Prato compete, with flag-bearer and archery contests and evocative historical processions. The town holds the Torre del Cassero and the Parco dei Mulini.