The Siachen conflict, sometimes referred to as the Siachen Glacier conflict or the Siachen War, was a military conflict between India and Pakistan over the disputed 1,000-square-mile (2,600 km2) Siachen Glacier region in Kashmir. The conflict was started in 1984 by India's successful capture of the Siachen Glacier as part of Operation Meghdoot, and continued with Operation Rajiv in 1987. India took control of the 70-kilometre-long (43 mi) Siachen Glacier and its tributary glaciers, as well as all the main passes and heights of the Saltoro Ridge immediately west of the glacier, including Sia La, Bilafond La, and Gyong La. Pakistan controls the glacial valleys immediately west of the Saltoro Ridge. A cease-fire went into effect in 2003, but both sides maintain a heavy military presence in the area. The conflict has resulted in thousands of deaths, mostly due to natural hazards. External commentators have characterized it as pointless, given the perceived uselessness of the territory, and indicative of bitter stubbornness on both sides.

Since the Partition of British India in 1947 and subsequent creation of the dominions of India and Pakistan, the two countries have been involved in a number of wars, conflicts, and military standoffs. A long-running dispute over Kashmir and cross-border terrorism have been the predominant cause of conflict between the two states, with the exception of the Indo-Pakistani War of 1971, which occurred as a direct result of hostilities stemming from the Bangladesh Liberation War in erstwhile East Pakistan.