Morin is a surname of different Romance origins. In northern Italy it derives from the Ladin term for «mill» (molina in Latin). In French it derives from the ancient Celtic tribe of Morini who once inhabited the coast of modern day Belgium. The Gaulish ethnonym Morini (sing. Morinos) literally means 'those of the sea', that is to say the 'sea people' or the 'sailors'. It stems from Proto-Celtic *mori 'sea'. It may also refer to: