| Aldein | |
| Official Name: | Gemeinde Aldein Comune di Aldino |
| Coordinates: | 46.3667°N 32°W |
| Region: | Trentino-Alto Adige/Südtirol |
| Province: | South Tyrol (BZ) |
| Frazioni: | Radein (Redagno) |
| Mayor: | Christoph Matzneller |
| Elevation M: | 1225 |
| Area Total Km2: | 63.2 |
| Population As Of: | 31 August 2020 |
| Population Total: | 1648 |
| Population Demonyms: | Italian: di Aldino German: Aldeiner (Natives: Voldeiner) |
| Postal Code: | 39040 |
| Area Code: | 0471 |
Aldein (pronounced as /de/; Italian: Aldino pronounced as /it/) is a comune (municipality) and a village in South Tyrol in northern Italy, located about 15km (09miles) south of the city of Bolzano. Aldein borders the following municipalities: Bronzolo, Montan, Deutschnofen, Auer, Truden and Ville di Fiemme. It contains the frazione (subdivision) Radein (Redagno).
A settlement called Aldinum is mentioned for the first time in 1177, in 1185 the name appears as Alden.[1]
The coat of arms is divided party per fess; on the top are two quarter-circle, azure on argent background that represents the Weisshorn. The lower part shows the argent cross of Saint Andrew shortened that represent the four original hamlets on a gules background as the mountain of porphyrite. The arms were adopted in 1969.[2]
According to the 2011 census, 98.07% of the population speak German, 1.74% Italian and 0.19% Ladin as first language.[3]