The Interior Plateau comprises a large region of central British Columbia, and lies between the Cariboo and Monashee Mountains on the east, and the Hazelton Mountains, Coast Mountains and Cascade Range on the west. It has several subdivisions, these being:

• The Fraser Plateau
  • The Chilcotin Plateau
  • The Cariboo Plateau
    • The Bonaparte Plateau
  • The Nechako Plateau
• The Thompson Plateau

The Cariboo and Chilcotin Plateaus are separate by the Fraser River. The Nechako Plateau flanks the Fraser on both sides; its southern boundary is defined by the West Road River (aka the Blackwater River) and the Quesnel River, and its northern boundary are the Omineca Mountains and the Cassiar Mountains.

Several mountain ranges and hill-systems are included in the definition of this region. Among these are:

• The Clear Range
• The Marble Range
• The Rainbow Range (sometimes assigned to either the Pacific Ranges or Kitimat Ranges subranges of the Coast Mountains)
• The Arrowstone Hills (SW edge of the Bonaparte Plateau)
• The Quanchus Range (western edge of the Nechako Plateau
• The Pattullo Range
• The Telegraph Range
• The Fawnie Range

Some classifications systems assign the Pattullo Range to the Hazelton Mountains, which are part of the larger Skeena Mountains complex, but then theoretically also is the Quanchus Range. Also, the Cariboo Mountains are sometimes included as part of the Interior Plateau.

The continuation of the plateau into the United States is known there as the Columbia Plateau.

See also

• History of the Interior Plateau
• Columbia River Plateau

Mountain ranges of British Columbia