Muhammad Ziaullah Khan Chishti (born 1971) is a Pakistani–American investor and business executive. He is the founder of Afiniti and TRG Global. After starting his career as a Morgan Stanley investment banker, Chishti invented the medical device Invisalign and co-founded Align Technology to market the product in 1997. He served as CEO of Align until 2003, when he founded the investment fund The Resource Group. In 2005 he co-founded both Orthoclear and Afiniti, the latter of which develops artificial intelligence for use in customer call centers. Chishti was a named inventor on around 150 issued patents by 2018, and had co-founded three unicorn startup companies.