Lagmamdha Guthi, often shortened to 'Lagma', is a Village Development Committee (VDC) in Dhanusa District in the Janakpur Zone of south-eastern Nepal.

At the time of the 1991 Nepal census, it had a population of 3,726 people living in 663 individual households.

The major livelihoods for residents of Lagma are Fishing and Livestock; mainly the keeping of cattle animals, goats and duck.

However, due to the increased supply of narrow tube wells with manual pumps, locally known as "kael".

This resulted in widespread water borne diseases and children's health suffered badly.