| Image Coa: | Wappen Betzigau.svg |
| Coordinates: | 47.7333°N 33°W |
| Image Plan: | Betzigau in OA.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Oberallgäu |
| Elevation: | 728 |
| Area: | 29.27 |
| Postal Code: | 87488 |
| Area Code: | 0831 |
| Licence: | OA |
| Gemeindeschlüssel: | 09 7 80 114 |
| Mayor: | Roland Helfrich[1] |
| Leader Term: | 2020 - 26 |
| Website: | www.betzigau.de |
Betzigau (pronounced as /de/)is a municipality in the district of Oberallgäu in Bavaria in Germany. The altitude of the village ranges from 709 m above sea level to 946 m. Betzigau is on the Buchloe–Lindau railway line.
From 1988 to 2008 Betzigau grew by 440 residents, or 19 %. Between 1988 and 2018 the village grew from 2320 to 2926 so 606 residents, or 26,1 %.
The following figures refer to the territorial status of May 25, 1987.
| Population Development | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| align=left | Year | 1840 | 1900 | 1939 | 1950 | 1961 | 1970 | 1987 | 1991 | 1995 | 2000 | 2005 | 2010 | 2015 |
| align=left | Residents | 1092 | 1265 | 1319 | 1747 | 1648 | 1803 | 2280 | 2499 | 2637 | 2775 | 2830 | 2747 | 2845 |
Roland Helfrich is the mayor of Betzigau.
The municipal tax revenue in 2017 was €2,841,000. Of that, €606,000 were revenue from trade tax.