Jenesien (German: [jeˈneːsi̯ən]; Italian: San Genesio Atesino [san dʒeˈnɛːzjo ateˈziːno]) is a comune (municipality) and a village in the province of South Tyrol in northern Italy, located about 4 kilometres (2.5 mi) northwest of the city of Bolzano.

[3] Jenesien borders the following municipalities: Bolzano, Mölten, Ritten, Sarntal, and Terlan.

The municipality of Jenesien contains the frazioni (subdivisions, mainly villages and hamlets) Afing (Avigna), Flaas (Valas), Glaning (Cologna), and Nobls (Montoppio).

The emblem is argent party per bend and five piles of gules, coming out of the diagonal division.

[4] According to the 2024 census, 95.03% of the population speak German, 4.83% Italian and 0.14% Ladin as first language.