William G. Parrett is an American businessperson who founded US National Financial Services Industry Group and Global Financial Services Industry Group and who has been at the helm of 8 different companies.

He is Member of The American Institute of Certified Public Accountants, Member of CECP and Member of Committee On Capital Markets Regulation and on the board of 7 other companies.

William G. Parrett previously occupied the position of Senior Trustee at United States Council for International Business, Chairman for US National Financial Services Industry Group, Chairman at Global Financial Services Industry Group, Chairman at United Way of America Membership Committee, Independent Director at Conduent, Inc., Managing Partner at Deloitte LLP (New York) Chief Executive Officer at Deloitte Touche Tohmatsu Ltd. and Senior Partner at Deloitte & Touche LLP (both are subsidiaries of Deloitte LLP (New York)), Chairman of UBS Americas Holding LLC and Chairman of United Way Worldwide.

William G. Parrett received an undergraduate degree from St. Francis College.