Since joining Deloitte in 1985, Diana O’Brien has championed and created experiences that empower leaders to thrive. As CMO, Diana focuses on creating world-class client experiences and business insights, building relationships, innovating marketing approaches, and ultimately driving Deloitte’s growth. Diana was named one of Business Insider’s “Top 50 Most Innovative CMOs in the World,” and is #24 on Forbes’ list of the World’s Most Influential CMOs.

Diana was the first managing principal for Deloitte’s leadership center, Deloitte University, and managing principal for talent development. She served as global client portfolio leader responsible for Deloitte’s global clients and industries program, and led Deloitte Consulting’s Life Sciences practice.

Outside Deloitte, Diana supports several charities related to autism and is the chairman/founder of IMPACT Autism. Diana is a proud Cincinnati native, and she lives there with her husband and three children.