Jammu and Kashmir and Ladakh Territories lie in the extreme northwest of India. The region has three distinct biogeographic zones, viz. Trans Himalaya, Northwest Himalaya and Semi-arid Plains. The Trans Himalaya is almost represented by Ladakh as like cool desert while Northwest Himalaya mostly by Kashmir and the climate is temperate and northern parts of Jammu, the area of Rajouri, Punch and Bhadrwa like sub-temperate, and the semiarid plains of rest area of Jammu. These two union territories have great faunal diversity especially in union territory of Jammu and Kashmir. In this review, a total of 284 species of spiders described under 160 genera belonging to 34 families were reported as per the literatures up to October 2022 of two union territories of northwest India viz., Jammu and Kashmir and Ladakh. The biodiversity of spiders is more in Jammu and Kashmir (252 species, 148 genera, 31 families) than Ladakh (42 species, 34 genera, 14 families). However, most of the areas in both territories are unexplored and still virgin regarding the faunal survey programmes and need intensive and extensive survey in those areas by enthusiastic workers. In this study, it was also determined that the cultivated land of the Jammu and Kashmir and Ladakh mostly covered with apple and due to high number of application of pesticides and high level of disturbance, the useful and predatory spiders migrate to uncultivated lands including forest and high hills which has not been unexplored and still virgin and needs more attention for the conservation of these predatory fauna that has great predation ability of harmful pests.