| Ploudaniel | |
| Native Name: | Plouzeniel |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason plou.PNG |
| Coordinates: | 48.5375°N -4.3103°W |
| Elevation Min M: | 27 |
| Elevation Max M: | 121 |
| Insee: | 29179 |
| Postal Code: | 29260 |
| Arrondissement: | Brest |
| Canton: | Lesneven |
| Mayor: | Pierre Guiziou[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Lesneven Côte des Légendes |
| Area Km2: | 46.28 |
Ploudaniel (in French pronounced as /pludanjɛl/; Breton: Plouzeniel) is a commune in the Finistère department of Brittany in north-western France.
Ploudaniel has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Ploudaniel is . The average annual rainfall is with December as the wettest month. The temperatures are highest on average in August, at around, and lowest in January, at around . The highest temperature ever recorded in Ploudaniel was on 18 July 2022; the coldest temperature ever recorded was on 1 January 1997.
Inhabitants of Ploudaniel are called in French Ploudaniélois.
The municipality launched a linguistic plan through Ya d'ar brezhoneg on 2 February 2007.