Arvorezinha (Portuguese: [ˌaʁ.vo.ɾiˈzĩ.ɲɐ] ) is a municipality in the state of Rio Grande do Sul, Brazil. It literally means "small tree".

The municipality's first inhabitant was Lino Figueira, who settled in the region c. 1900. Much of the incoming population were Italian immigrants from the nearby cities of Antônio Prado, Veranópolis, Bento Gonçalves, Caxias do Sul and Garibaldi, who started settling during the early 20th century. Before its establishment as a municipality, which was official as of February 16, 1959, the land belonged to Taquari and later Encantado.

• List of municipalities in Rio Grande do Sul

28°53′S 52°10′W / 28.883°S 52.167°W / -28.883; -52.167