Richard "Rick" Belluzzo (born November 26, 1953)[1] is an American businessman who worked as an executive at Hewlett-Packard (HP), Silicon Graphics (SGI), Microsoft (MS), Quantum Corp. (QTM), and Viavi Solutions (VIAV).

[6] In August 1999, Belluzzo left SGI to head Microsoft's MSN division,[7] and then the whole Consumer business, leading several emerging efforts, including the launch of the first Xbox.

In February 2001, he became president and chief operating officer of Microsoft, running the day-to-day business during the critical CEO transition from Bill Gates to Steve Ballmer.

[8][9] In September 2002, he was appointed CEO at Quantum Corp., where he managed the transformation from a tape drives to a storage systems company.

[10] In August 2015 he was appointed Interim CEO at Viavi Solutions, and finished the break-up of JDSU into two public companies.