Steven Todd Kirsch (born December 24, 1956) is an American serial entrepreneur who has started seven companies: Mouse Systems, Frame Technology Corp., Infoseek, Propel, Abaca, OneID, and Token.
He invented and patented an early version of the optical mouse.
In 2007, his personal fortune was estimated at $230 million, the majority earned from the IPO of Infoseek and the acquisition of Frame Technology.