As the chief marketing officer for Deloitte’s US and global organization, Diana O’Brien leads the network’s marketing function to drive growth, build world-class creative and analytics capabilities, and champion the voice of the customer. She enables marketing leaders to make a greater impact by aligning marketing execution with Deloitte’s global strategy and brand purpose. She also leads the C-Suite CMO Program, and serves as an advisory partner to two global life sciences clients.

Since joining the firm in 1985, she has held a number of leadership roles across global client portfolios. Appointed in 2015 as the first chief marketing officer for the US, she reimagined marketing by combining independent marketing functions with PR, communications, and digital to create a cohesive, agile, client-centric organization. She led the ground-breaking and opening of Deloitte University, our 700,000 square-foot, $300 million leadership center and as its managing principal, was responsible for industry and professional learning, leadership development, leader succession, community and inclusion engagement. Diana has been included in Forbes’ World’s Most Influential CMOs and Business Insider’s "Top 50 Most Innovative CMOs in the World."

Her passion extends to charities related to autism and diversity. She is the chairman and founder of IMPACT Autism, a forward-thinking organization that creates and delivers life management solutions to combat the educational, emotional, and social challenges of living with autism.

Diana holds an MBA in finance and a BS in behavioral management from Xavier University.