Walden is a town located in Hamilton County, Tennessee, United States.

Walden, along with the communities of Fairmount and Lone Oak are located within the town of Signal Mountain's zip code, 37377.

[7] The town is situated atop Walden's Ridge, a section of the Cumberland Plateau.

According to the United States Census Bureau, the town has a total area of 3.6 square miles (9.3 km2), all of it land.

Because of its particularly high proximity atop the southerly "Signal Mountain" section of Walden Ridge, the town of Walden contains an antenna farm, with the transmitter sites of two of Chattanooga, Tennessee's television stations, WRCB-TV, Channel 3 and WTVC-TV, Channel 9.