Tombstone Territorial Park, Territorial park in Yukon, Canada

Tombstone Territorial Park is a territorial park in central Yukon, Canada, protecting over 2100 square kilometres of the Ogilvie Mountains and Blackstone Uplands. The Dempster Highway runs through it from the 50.5 to the 115.0 kilometre marker, with the western part about three times the size of the eastern. Its highest summit, Tombstone Mountain, rises 2196 metres and gives the park its name.

Scientists identified sensitive sites in the 1970s, leading to protection measures during Dempster Highway construction. These early conservation efforts formed the foundation for the park's eventual establishment.

The park is co-managed by the Yukon government and the Tr'ondëk Hwëch'in First Nation, a result of the 2000 land settlement agreement. The Tr'ondëk Hwëch'in have lived in the region for at least 8,000 years, and over 78 archaeological sites document their continuous use. The park's name comes from Tombstone Mountain, whose shape resembles a grave marker.

The interpretive center sits near Dempster Highway and offers information plus resources for backcountry travel. Visitors should check conditions and seasons before visiting, as this area is remote and exposed to harsh weather.

The park straddles the divide between waters reaching the Bering Sea and those reaching the Beaufort Sea, along an igneous belt of granitic and syenitic rock called the Cretaceous Tombstone Suite that runs from Fairbanks, Alaska, to Ross River. Tombstone Mountain, the park's namesake, was first climbed on 21 June 1973 by Martyn Williams, Jurg Hofer and Liz Hofer.