Retzwiller | |
|---|---|
The town hall in Retzwiller | |
![]() Location of Retzwiller | |
| Coordinates: 47°37′55″N 7°05′38″E / 47.6319°N 7.0939°E | |
| Country | France |
| Region | Grand Est |
| Department | Haut-Rhin |
| Arrondissement | Altkirch |
| Canton | Masevaux-Niederbruck |
| Intercommunality | Sud Alsace Largue |
| Government | |
| • Mayor (2020–2026) | Franck Grandgirard |
Area 1 | 4.1 km2 (1.6 sq mi) |
| Elevation | 315 m (1,033 ft) |
| Highest elevation | 392 m (1,286 ft) |
| Lowest elevation | 302 m (991 ft) |
| Population (2023) | 689 |
| • Density | 170/km2 (440/sq mi) |
| Time zone | UTC+01:00 (CET) |
| • Summer (DST) | UTC+02:00 (CEST) |
| INSEE/Postal code | 68268 /68210 |
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |

Retzwiller (French pronunciation: [ʁɛtsvilɛʁ] ⓘ; German: Retzweiler) is a commune in the Haut-Rhin department in Alsace in north-eastern France.
| Year | Pop. | ±% p.a. |
|---|---|---|
| 1968 | 655 | — |
| 1975 | 512 | −3.46% |
| 1982 | 538 | +0.71% |
| 1990 | 538 | +0.00% |
| 1999 | 583 | +0.90% |
| 2007 | 650 | +1.37% |
| 2012 | 634 | −0.50% |
| 2017 | 709 | +2.26% |
| 2023 | 689 | −0.48% |
| Source: INSEE | ||