| Arrondissement of Tongeren | |
| Native Name: | Dutch; Flemish: Arrondissement Tongeren |
| Type: | Arrondissement |
| Coordinates: | 50.85°N 5.5°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Belgium |
| Subdivision Type1: | Region |
| Subdivision Type2: | Province |
| Parts Type: | Municipalities |
| Parts Style: | para |
| P1: | 13 |
| Unit Pref: | Metric |
| Area Total Km2: | 631.56 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
The Arrondissement of Tongeren (nl|Arrondissement Tongeren; fr|Arrondissement de Tongres) is one of the three administrative arrondissements in the Province of Limburg, Belgium. It is both an administrative and a judicial arrondissement. However, the Judicial Arrondissement of Tongeren comprises the municipalities of Tongeren, Bocholt, Bree, Kinrooi, Meeuwen-Gruitrode, Dilsen-Stokkem and Maaseik in the Arrondissement of Maaseik and the municipalities of As, Genk, Opglabbeek and Zutendaal in the Arrondissement of Hasselt.
The arrondissement was created in 1839 to form the Belgian part of the former arrondissement of Maastricht, which ceased to exist due to the splitting of Limburg. The canton of Borgloon was also moved from the arrondissement of Hasselt to the new arrondissement of Tongeren.
The Administrative Arrondissement of Tongeren consists of the following municipalities:[1]