Thainston is a farm complex and national historic district in La Plata, Charles County, Maryland, United States.

A frame garage and large chicken house, both dating from the early 1900s, are on the property.

There are three frame tenant houses, several associated sheds, a probably early building site, an early well, a pit remaining from a former ice house, and the former ice ponds.

[2] Thainston was added to the National Register of Historic Places in 1990.

This article about a Registered Historic Place in Charles County, Maryland is a stub.