Lanvéoc (French pronunciation: [lɑ̃veɔk]; Breton: Lañveog) is a commune in the Finistère department of Brittany in north-western France.

The average annual rainfall is 1,006.4 mm (39.62 in) with December as the wettest month.

The temperatures are highest on average in August, at around 17.4 °C (63.3 °F), and lowest in February, at around 7.1 °C (44.8 °F).

Inhabitants of Lanvéoc are called in French Lanvéociens.

This Finistère geographical article is a stub.