Lawngtlai West is one of the 40 Legislative Assembly constituencies of Mizoram state in India.

[1] It was established in 2008 after the passing of the Delimitation of Parliamentary and Assembly Constituencies Order, 2008.

[1] It is part of Lawngtlai district, and is reserved for candidates belonging to the Scheduled Tribes.

As of 2023, it is represented by C. Ngunlianchunga of the Indian National Congress party.