Lagma is a village in the northern Indian state of Bihar

Lagma is located on the bank of the Kosi River. It is surrounded by the river on three sides. Highway NH-107 passes through the village. It is about 25 kilometers from Saharsa district and 7 Kilometers from Sonbarsa Block. There are three schools in this village, one primary school, one middle school and One high school near NH-107.