Ploudaniel (French pronunciation: [pludanjɛl]; Breton: Plouzeniel) is a commune in the Finistère department of Brittany in north-western France.

The average annual rainfall is 1,164.1 mm (45.83 in) with December as the wettest month.

The temperatures are highest on average in August, at around 16.9 °C (62.4 °F), and lowest in January, at around 6.7 °C (44.1 °F).

Inhabitants of Ploudaniel are called in French Ploudaniélois.

The municipality launched a linguistic plan through Ya d'ar brezhoneg on 2 February 2007.