Pianezzo is a former municipality in the district of Bellinzona in the canton of Ticino in Switzerland.

In 1905, a major burial ground from the Iron Age came to light, which seems to be from the Golasecca culture.

Objects found in the graves indicate that the settlement was also in contact with residents of the Alpine region.

East of the city there are also some medieval ruins, which are probably built on the site of a Roman era customs post or even a pre-Roman settlement.

[2] In the 15th century the Church of S. Pietro in Bellinzona possessed vineyards and farmsteads in Pianezzo.

In the Middle Ages, portions of the village formed part of the community of Vallemorobbia.

The local economy was based on traditional agriculture and animal husbandry.

At the beginning of the 21st century more than three-quarters of workers in Pianezzo commuted to Bellinzona and Giubiasco.

[3] The municipality is located in the Bellinzona district, at the entrance to the Valle Morobbia.

[4] The blazon of the municipal coat of arms is Per bend sinister Or a Cup Sable and Gules a Mount of 3 Coupeaux Vert.

The cup may represent a glass (Italian: bicchiere) dating from the Iron Age.

[7] The age distribution, as of 2009[update], in Pianezzo is; 55 children or 9.8% of the population are between 0 and 9 years old and 50 teenagers or 8.9% are between 10 and 19.

[8] The historical population is given in the following table:[2] In the 2007 federal election the most popular party was the FDP which received 37.76% of the vote.

In the federal election, a total of 234 votes were cast, and the voter turnout was 53.7%.

[13] In the 2007[update] Gran Consiglio election, there were a total of 438 registered voters in Pianezzo, of which 319 or 72.8% voted.

[8] There were 211 residents of the municipality who were employed in some capacity, of which females made up 43.6% of the workforce.

[16] From the 2000 census[update], 383 or 78.3% were Roman Catholic, while 17 or 3.5% 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.

The professional program lasts three years and prepares a student for a job in engineering, nursing, computer science, business, tourism and similar fields.