braj (ब्रज) also known as brij (बृज) is a region mainly in uttar pradesh of india, around mathura-vrindavan. brij, though never a clearly defined political region in india, is very well demarcated culturally. the area stretches from mathura, jalesar, agra, hathras and aligarh right up to etah, mainpuri and farrukhabad districts. it is considered to be the land of krishna and is derived from the sanskrit word "vraja". the main cities in the region are mathura, jalesar, bharatpur, agra, hathras, dholpur, aligarh, etawah, mainpuri, etah, kasganj and firozabad.