| Lanvéoc | |
| Native Name: | Lañveog |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Lanvéoc (29).svg |
| Coordinates: | 48.2867°N -4.4608°W |
| Insee: | 29120 |
| Postal Code: | 29160 |
| Arrondissement: | Châteaulin |
| Canton: | Crozon |
| Mayor: | Christine Lastennet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Presqu'île de Crozon-Aulne maritime |
| Elevation Min M: | 0 |
| Elevation Max M: | 87 |
| Area Km2: | 19.21 |
Lanvéoc (in French pronounced as /lɑ̃veɔk/; Breton: Lañveog) is a commune in the Finistère department of Brittany in north-western France. The École Navale, the French naval academy, is located here.
Lanvéoc has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Lanvéoc 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 February, at around . The highest temperature ever recorded in Lanvéoc was on 12 July 1949; the coldest temperature ever recorded was on 21 February 1948.
Inhabitants of Lanvéoc are called in French Lanvéociens.