The Soanian cultural tradition represents a significant Lower Palaeolithic archaeological complex primarily found in the Siwalik Hills region of the Indian subcontinent, particularly in the Soan Valley (now in Pakistan) and parts of Punjab. This tradition is characterized by its distinctive pebble tool industry, which includes choppers and chopping tools, often made from quartzite pebbles. These tools are typically crude and unifacially or bifacially flaked, indicating a relatively early stage of stone tool technology.

The Soanian culture was first identified and systematically studied by H. De Terra and T.T. Paterson in the 1930s during their Yale-Cambridge expedition. They categorized the tools into various phases, such as Pre-Soan, Early Soan, Late Soan, and Evolved Soan, based on typological and technological advancements observed in the stratigraphy of river terraces. The sites associated with this tradition are often found on river terraces, indicating that the early hominins who created these tools lived along ancient river systems.

While the Soanian tradition is distinct from the Acheulian handaxe-cleaver complex, which is also prevalent in other parts of India during the Lower Palaeolithic, there is evidence of some overlap and interaction between the two traditions in certain regions. The Soanian tools are generally considered to be older or contemporary with the early Acheulian, suggesting a diverse technological landscape in early human occupation of India. The discovery of Soanian sites provides crucial insights into the early peopling of the Indian subcontinent and the adaptive strategies of its earliest inhabitants, who were likely hunter-gatherers exploiting riverine and forest resources.