Moosinning is a municipality located in the district of Erding in Upper Bavaria, Germany. It is situated within the Munich metropolitan region, specifically in the area known as the Erdinger Moos. The town is positioned approximately 7 km southwest of the district capital, Erding, and lies about 16 km from Munich Airport and 32 km from the Bavarian state capital, Munich.
The municipality consists of the main village of Moosinning along with ten other settlements. Its territory is notable for containing portions of two nature reserves: the Zengermoos and Gfällach.