Tilmon is an unincorporated community in Caldwell County, in the U.S. state of Texas.

It is located within the Greater Austin metropolitan area.

The Old Settler's Music Festival is held in the community.

Tilmon stands on Farm to Market Road 3158, approximately 10 mi (16 km) southeast of Lockhart in the southeastern part of Caldwell County.

[2] Today, the community is served by the Lockhart Independent School District.