| Giessen | |
| Native Name: | German: Regierungsbezirk Gießen |
| Native Name Lang: | de |
| Settlement Type: | German: [[Regierungsbezirk]] |
| Subdivision Type: | Country |
| Subdivision Name: | Germany |
| Subdivision Type1: | State |
| Subdivision Name1: | Hesse |
| Extinct Title: | Disestablished |
| Seat Type: | Region seat |
| Seat: | Giessen |
| Leader Party: | CDU |
| Leader Name: | Christoph Ullrich |
| Leader Title: | District President |
| Area Total Km2: | 5381.14 |
| Population Density Km2: | auto |
| Demographics Type1: | GDP |
| Demographics1 Footnotes: | [1] |
| Demographics1 Title1: | Total |
| Demographics1 Info1: | €39.154 billion (2021) |
Giessen (Gießen in German) is one of the three German: [[Regierungsbezirk]]e of Hesse, Germany, located in the middle of the state. It was created on 1 January 1981 from the districts (German: Kreise) of Giessen, Lahn-Dill and Limburg-Weilburg and the German: [[Vogelsbergkreis]], all formerly belonging to Darmstadt, and Marburg-Biedenkopf, formerly belonging to Kassel.
The Gross domestic product (GDP) of the region was €35.9 billion in 2018, accounting for 1.1% of German economic output. GDP per capita adjusted for purchasing power was €47,800 or 105% of the EU27 average in the same year. The GDP per employee was 96% of the EU average.[2]