Eustis is a village in Frontier County, Nebraska, United States. The population was 401 at the 2010 census.
Eustis had its start in the year 1886 by the building of the railroad through that territory. It was named for Percy Sprague Eustis, a railroad official.
Eustis is located at 40°39′51″N 100°1′52″W / 40.66417°N 100.03111°W / 40.66417; -100.03111 (40.664181, -100.031120).