Peçanha is a municipality in the state of Minas Gerais, in the Southeast region of Brazil. It lies about 210 kilometres (130 miles) northeast of Belo Horizonte, the state capital.
The town was founded in 1758 by João Peçanha Falcão under the name Santo Antônio do Peçanha, and it is named for him. It became its own municipality in 1881, when it took the name Suaçuí, before reverting to its original name in 1887. In 1911 the municipality adopted the name Peçanha.
The municipality has a population of 17,863 as of 2025. Of that population, 68 per cent identify as mixed or other, 21 per cent as white, and 11 per cent as Afro-Brazilian.