Seibert is a statutory town in Kit Carson County, Colorado, United States. The population was 172 at the 2020 census.
A post office called Seibert has been in operation since 1888. The community was named after Henry Seibert, a railroad agent.
Seibert is located at (39.299456, -102.870204).
According to the United States Census Bureau, the town has a total area of , all of it land.