Seniga is a comune situated in the province of Brescia within the Lombardy region of Italy. It is geographically positioned along the Oglio river, which serves as the natural border between the provinces of Brescia and Cremona.
The municipality is bounded by the communes of Pralboino, Milzano, and Alfianello. As of 2011, Seniga had a recorded population of 1,624 residents.