| Plogastel-Saint-Germain | |
| Native Name: | Plogastell-Sant-Jermen |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Plogastel-Saint-Germain (Finistère).svg |
| Coordinates: | 47.9844°N -4.2703°W |
| Elevation Min M: | 35 |
| Elevation Max M: | 160 |
| Insee: | 29167 |
| Postal Code: | 29710 |
| Arrondissement: | Quimper |
| Canton: | Plonéour-Lanvern |
| Mayor: | Annie Berrivin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haut-Pays Bigouden |
| Area Km2: | 31.39 |
Plogastel-Saint-Germain (in French pronounced as /plɔɡastɛl sɛ̃ ʒɛʁmɛ̃/;) s a commune in the department of Finistère, in the Brittany region, 15 km west of Quimper. Belonging to Pays Bigouden, within the former political and religious region of Cornouaille, its territory of 31 km2 has a resolutely rural character. There is still a large majority of cultivated land and agricultural areas (80% of its area), not to mention forests (10%) and meadows (8%).The municipalities (or old municipalities, urban areas) bordering Ploegastel-Saint-Germain include: Gourlizon, Landudec, Peumerit，Plonéour-Lanvern, Plovan, Pluguffan,Plozévet.[2]
Inhabitants of Plogastel-Saint-Germain are called in FrenchPlogastellois.