San Quirino is a comune in the Regional decentralization entity of Pordenone in the Italian region of Friuli-Venezia Giulia, located about 100 kilometres northwest of Trieste and about 8 kilometres northeast of Pordenone. San Quirino borders the following municipalities: Aviano, Cordenons, Maniago, Montereale Valcellina, Pordenone, Roveredo in Piano, Vivaro.