A31 or A-31 may refer to:
The Province of Vicenza is a province in the Veneto region in northern Italy. Its capital city is Vicenza.
Vetralla is a town and comune in the province of Viterbo, in central Italy, 11 kilometres (7 mi) south of that city, located on a shoulder of Monte Fogliano.
Mossano is a frazione of the comune of Barbarano Mossano in the province of Vicenza, Veneto, noerth-eastern Italy. It is west of SP247 provincial road.
Rovolon is a comune (municipality) in the Province of Padua in the Italian region Veneto, located about 50 kilometres (31 mi) west of Venice and about 15 kilometres (9 mi) southwest of Padua. As of 31 December 2004, it had a population of 4,207 and an area of 27.6 square kilometres (10.7 sq mi).
Barbarano Romano is a comune (municipality) in the Province of Viterbo in the Italian region of Latium, located about 50 kilometres (31 mi) northwest of Rome and about 20 kilometres (12 mi) south of Viterbo.
Capranica is a comune (municipality) in the Province of Viterbo in the Italian region Lazio, located about 55 kilometres (34 mi) northwest of GRA, 66 kilometres (41 mi) from Rome’s centre, and 24.5 kilometres (15.2 mi) southeast of Viterbo.
Villa San Giovanni in Tuscia is a comune (municipality) in the Province of Viterbo in the Italian region of Latium, located about 60 kilometres northwest of Rome and about 15 km (9 mi) southwest of Viterbo.
Veranópolis is a municipality in the state of Rio Grande do Sul, Brazil. As of 2020, the estimated population was 26,533.
Tiberius Petasius was a Byzantine usurper in Italy c.730/731.
Giacomo Benvenuti was an Italian composer and musicologist. He was the son of organist Cristoforo Benvenuti and studied at the Liceo Musicale in Bologna under Luigi Torchi (musicology) and Marco Enrico Bossi (organ). In 1919 his collection of songs for voice and piano accompaniment, Canti a una voce : con accompagnamento di pianoforte, was published in Bologna. In 1922 he published a collection of 17th-century art songs entitled 35 Arie di vari autori del secolo XVII. Composer Samuel Barber studied the works of Giulio Caccini, Andrea Falconieri, and other early Italian composers under his tutelage in Milan in 1933–1934. For the Teatro dell'Opera di Roma he adapted Claudio Monteverdi's L'Orfeo for a production which premiered on 27 December 1934. The adaptation was later used for the first recording of L'Orfeo in 1939, which included a performance by the orchestra of La Scala Milan under conductor Ferrucio Calusio.
Mattia Turetta is an Italian professional footballer.
Teofilo Bruni was an Italian mathematician and astronomer.
Bortezomib/dexamethasone is a combination drug against multiple myeloma. When bortezomib is used by the trade name Velcade, the combination is called Vel/Dex. Bortezomib is a proteasome inhibitor and dexamethasone is a corticosteroid.
Barbarano Mossano is a comune (municipality) in the Province of Vicenza in the Italian region Veneto.
Giuseppina Cobelli was an Italian soprano opera singer.
Ljudevit Vuličević was an Italian-language writer and cleric who was known for his Serbian and pan-Slavic patriotism.
Italy 
