| Regen | |
| State: | Bavaria |
| Image Coa: | DEU Landkreis Regen COA.svg |
| Capital: | Regen |
| Regierungsbezirk: | Lower Bavaria |
| Area: | 975 |
| Kreisschlüssel: | 09276 |
| District Admin: | Rita Röhrl |
| Admin Party: | SPD |
| Carsign: | REG, VIT |
| Url: | landkreis-regen.de |
Regen is a Landkreis (district) in Bavaria, Germany. It is bounded by (from the south and clockwise) the districts of Freyung-Grafenau, Deggendorf, Straubing-Bogen and Cham, and by the Czech Republic (Plzeň Region).
The district was established in 1972 by merging the former districts of Regen and Viechtach.
The district is entirely located in the Bavarian Forest. It is named after the Regen river and its two headstreams, the Black Regen and the White Regen.
The coat of arms displays:
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