Which mountain range contains the Siachen Glacier?

The mountain range containing the Siachen Glacier is the Karakoram.

Siachen Glacier lies in the eastern Karakoram, a vast high mountain system adjoining the Himalayas and spanning parts of India, Pakistan, and China. The glacier is in the contested Kashmir region, northeast of NJ9842, where the India–Pakistan Line of Control ends. Its entire main glacier and the surrounding high passes have been administered by India since 1984, while Pakistan disputes the territorial claim.

The glacier occupies a strategically important setting between the Saltoro Ridge to the west and the main Karakoram range to the east. Its head is near Indira Col, close to the drainage divide separating the Eurasian and Indian subcontinental systems, and its tributaries form part of one of the world’s most heavily glaciated non-polar mountain regions.

The Hindu Kush and Pamir are nearby major ranges, which makes them tempting alternatives, but neither is the accepted range identification for Siachen Glacier. Zagros is much farther west, chiefly associated with Iran and Iraq.