Within the Happy Tree Friends universe, many locations have been seen in various episodes. Most commonly seen are characters' homes. Other areas also exist, ranging from individual buildings, to parks, to towns and cities. Then there are natural locations such as beaches, forests, and even whole countries; particularly Vietnam as explained through Flippy's biography.
The universe within this show also contains a Space and Cosmos. It must be noted, however, that locations listed in this article are assumed to be Happy Tree Friends Universe parallels to their real world counterparts.