The Thessalans are one of the nine Vaas Clans of the Highlands region.

The earliest Thessalans originated from a small region of the Highlands called the Thessalan Hills, and founded a small stronghold there called "Thessala." Today, this region is located within the Theocracy of Derianor.

Some Thessalans eventually migrated further east into the Wildlands and established the Freehold of Lakewood, the fallen Freehold of Rhest, and later, the Barony of Brindol.