| Guengat | |
| Native Name: | Gwengad |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Guengat (Finistère).svg |
| Coordinates: | 48.0425°N -4.2042°W |
| Insee: | 29066 |
| Postal Code: | 29180 |
| Arrondissement: | Quimper |
| Canton: | Quimper-1 |
| Mayor: | David Le Goff[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Quimper Bretagne Occidentale |
| Elevation Min M: | 7 |
| Elevation Max M: | 162 |
| Area Km2: | 22.72 |
Guengat is a commune in the Finistère department of Brittany in northwestern France.
Inhabitants of Guengat are called in French Guengatais.