Absolutely, Rwanda and Uganda are renowned as one of the prime destinations to encounter Gorillas in their Natural habitat. Gorillas can be seen through guided trekking in protected national parks in Uganda, Rwanda, and the Democratic Republic of Congo (DRC).

Uganda: Bwindi Impenetrable National Park (most popular for mountain gorillas) and Mgahinga Gorilla National Park.
Rwanda: Volcanoes National Park (also for mountain gorillas).
DR Congo: Virunga National Park (mountain gorillas) and Kahuzi-Biega (eastern lowland gorillas).