The Petit Morin (French pronunciation: [pəti mɔʁɛ̃], literally Little Morin) is an 86 km-long (53 mi) river in France, a left tributary of the Marne.^[1] Its source is in the commune Val-des-Marais. Its course crosses the departments of Marne, Aisne and Seine-et-Marne. It flows westwards through the towns of Montmirail, Villeneuve-sur-Bellot, Saint-Cyr-sur-Morin and Jouarre, finally flowing into the Marne in La Ferté-sous-Jouarre.

Petit Morin
Path of the Petit Morin [1]
Location
Country	France
Physical characteristics
Source
• location	Champagne
Mouth
• location	Marne
• coordinates	48°56′38″N 3°7′20″E / 48.94389°N 3.12222°E / 48.94389; 3.12222
Length	86 km (53 mi)
Basin features
Progression	Marne→ Seine→ English Channel