Salair Ridge (pronounced sah-lah-EER; ) is an eroded plateau-type highland in the Southwestern Siberia, Russia, particularly in Altai Krai, Kemerovo and Novosibirsk Oblast. It is a natural continuation of Altai Mountains and separates the Kuznetsk Depression from the Ob River Plain to the southwest. See Geography of South-Central Siberia. Its main ridge is nearly parallel to that of Kuznetsk Alatau. The ridge is some 300 kilometres in length and 15-40 kilometres wide.