Aranno is a municipality in the district of Lugano in the canton of Ticino in southern Switzerland.

Bordering municipalities are Cademario, Iseo, Alto Malcantone, Miglieglia and Novaggio.

In Aranno you can find the "Maglio", the last power hammer of Switzerland.

[3] Cemented into the facade of the Casa Pelli, there are four copies of grave stone fragments (discovered in 1842, originals in the Museo del Malcantone in Curio) with inscriptions in the so-called Alphabet of Lugano.

[3] One unconfirmed source states that the parish church of San Vittore was built in the 17th century on the ruins of an ancient castle.

Further up the valley, there are numerous terraces that support intensive cultivation of vineyards and grain.

On the right flank in the area of Miglieglia is the so-called Maglio power hammer.

It was built in 1860 in Aranno and is the only functional power hammer with a lever device in Switzerland.

[3] Aranno has an area, as of 1997[update], of 2.72 square kilometers (1.05 sq mi).

[4] The municipality is located in the Lugano district, in the Magliasina Valley at an elevation of 727 m (2,385 ft).

The blazon of the municipal coat of arms is Argent a plough gules and in a chief of the same a lion passant or.

[7] The age distribution, as of 2009[update], in Aranno is; 36 children or 11.3% of the population are between 0 and 9 years old and 34 teenagers or 10.7% are between 10 and 19.

[8] The historical population is given in the following table:[3] The entire village of Aranno is designated as part of the Inventory of Swiss Heritage Sites.

[14] In the 2007[update] Gran Consiglio election, there were a total of 218 registered voters in Aranno, of which 146 or 67.0% voted.

[8] There were 124 residents of the municipality who were employed in some capacity, of which females made up 43.5% of the workforce.

[8] From the 2000 census[update], 179 or 67.0% were Roman Catholic, while 34 or 12.7% belonged to the Swiss Reformed Church.

In the lower secondary school system, students either attend a two-year middle school followed by a two-year pre-apprenticeship or they attend a four-year program to prepare for higher education.