Zohar Zisapel was an Israeli businessman. He founded the RAD Group of companies with his brother, Yehuda.

The RAD Group consists of a number of independent companies that develop, manufacture and market solutions for diverse segments of the networking and telecommunications industry. Each company operates independently, without a holding company, but is guided by the group founders under a collective strategic umbrella. Companies share technology, engage in joint marketing activities and benefit from a common management structure.