| Guilliers | |
| Native Name: | Gwiler-Porc'hoed |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Guilliers (Morbihan).svg |
| Coordinates: | 48.0433°N -2.4042°W |
| Insee: | 56080 |
| Postal Code: | 56490 |
| Arrondissement: | Pontivy |
| Canton: | Ploërmel |
| Mayor: | Joël Lemazurier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Ploërmel Communauté |
| Elevation Min M: | 47 |
| Elevation Max M: | 114 |
| Area Km2: | 35.14 |
Guilliers (pronounced as /fr/;) is a commune in the Morbihan department of Brittany in north-western France.[2] Inhabitants of Guilliers are called in French Guilliérois.
The town is located 49km (30miles) northeast of Vannes. Historically, Guiiliers belongs to Porhoët and Upper Brittany.