Firth is a village in Lancaster County, Nebraska, United States. It is part of the Lincoln, Nebraska Metropolitan Statistical Area. The population was 564 at the 2000 census.
Firth is located at 40°32′4″N 96°36′20″W / 40.53444°N 96.60556°W / 40.53444; -96.60556 (40.534344, -96.605691).
According to the United States Census Bureau, the village has a total area of 0.3 square miles (0.8 km²), of which, 0.3 square miles (0.8 km²) of it is land and 3.23% is water.