Arthur D. Levinson (born March 31, 1950) is an American businessman and is the current CEO of Calico (a Google venture) and chairman of Apple Inc. (2011 to present). He is the former chairman of Genentech (1999 to 2014) and former chief executive officer of Genentech (1995–2009).

In addition to serving on the board of Apple. Inc. (2000–present), Levinson serves on the board of directors of the Broad Institute (affiliated with MIT and Harvard).Previously, Levinson had served on the board of directors at F. Hoffmann-La Roche (2010-2014), NGM Biopharmaceuticals (2009-2014), and Amyris Biotechnologies (2009-2014). He currently serves on the Board of Scientific Consultants of the Memorial Sloan Kettering Cancer Center, the Industrial Advisory Board of the California Institute for Quantitative Biosciences (QB3), the Advisory Council for the Princeton University Department of Molecular Biology and the Advisory Council for the Lewis-Sigler Institute for Integrative Genomics.In 2014,he received the National Medal of Technology and Innovation.