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Sue Fennessy (born 25 July 1968) is an Australian-born American, business woman, philanthropist and entrepreneur.^[1] She is the founder and CEO of WeAre8, founder, largest shareholder, and former CEO of the Standard Media Index (SMI),^[2] the founder of  Frontiers Group LTD, and a fellow at Monash University.^[3]

Sue Fennessy was born in Melbourne, Australia and matriculated to Monash University in 1989.^{[citation needed]} Fennessy later founded the Global Discovery program, leading their New York initiative.^[4]

In 1989, during the course of her university studies, Fennessy founded MM Communications, an international sponsorship business based in Asia Pacific. The company was acquired by Omnicom in 2000.^[5]

In 2001, Fennessy founded Frontiers Group, a technology-driven sports and entertainment company that structured and negotiated the 2002 World Cup TV/digital rights as well as  spearheaded lifestyle television programming in China. She also negotiated for the first Western musicals, Cats and Les Miserables, to be staged in China.^[5]

In 2009, Fennessy founded and became CEO of Standard Media Index (SMI), leading the company until 2014.^{[6][failed verification]} Operating out of in North America, APAC, and Europe, SMI is considered a preeminent global source of ad intelligence for media and finance companies including NBC, Disney, News Corporation, Google, Warner Media, CBS, UBS, Goldman Sachs, Deutsche Bank and Credit Suisse.^[7][8]

Fennessy is also the founder and CEO of social media app WeAre8.^[9] WeAre8 is a B-Corp.^[10] In November 2023, BBC Studios partnered with WeAre8, on a distribution deal for BBC Earth content.^[11]