A jay Jaisinghani is an Indian billionaire who, along with his brothers, is part of the founding family of Polycab India, one of the country's leading manufacturers of cables and wires. The company was founded by their late father, Thakurdas Jaisinghani, in 1968 as a small electrical shop. The brothers inherited the business and worked together to transform it from a modest enterprise into a dominant force in the Indian electrical goods market.

Under the collective leadership of the Jaisinghani brothers, Polycab expanded its product portfolio significantly. While cables and wires remain its core business, the company has successfully diversified into fast-moving electrical goods (FMEG) such as fans, lighting, switches, and appliances. This strategic diversification has been a key driver of growth. Ajay serves as an executive director on the company's board, contributing to its strategic vision and operational management. The company's successful IPO in 2019 brought the family's wealth into the public spotlight, highlighting their decades of work in building a manufacturing powerhouse.