Hiro Mizuno is a Japanese financial executive, serving as the Special Envoy of U.N Secretary-General on Innovative Finance and Sustainable Investments since January 2021. He previously served as Executive Management Director and CIO of GPIF (Government Pension Investment Fund of Japan with AUM $1.5 trillion). Prior to joining GPIF, Hiro Mizuno was a partner at Coller Capital, a London-based private equity firm. He formerly worked for Sumitomo Trust & Banking Co. Ltd. in Japan, Silicon Valley, and New York.