William H.L. Burnside is a retired Senior Vice President and director at The Boston Consulting Group (BCG). He became managing partner of BCG's Los Angeles office in 1987 after working in the firm's London and Chicago offices, serving clients across telecommunications, media, defense, financial services and manufacturing, and most recently served as an advisor to BCG from 2011 to 2023. He has been an AbbVie director since 2013 and serves on the Audit and Public Policy & Sustainability committees.