Robert Gass (born 1948), is a leadership coach and organizational consultant, seminar leader and rock musician. He holds a doctorate in Organizational and Clinical Psychology from Harvard University. He is known for his work in leadership development, organizational transformation, and building social movements. and is a former President of ARC International Consulting, a global consulting and training company specializing in transformational change. He co-founded the Rockwood Art of Leadership trainings which coaches environmental, social justice and human rights leaders across North America, in leadership. He is also co-founder of the Social Transformation Project and a former Board Chair of Greenpeace. Gass has coached leaders and organizations such as the Sierra Club, the NAACP, Amnesty International, MoveOn.org, Service Employees International Union (SEIU) the National Congress of American Indians, 350.org, National Domestic Workers Union, Greenpeace International, and the Obama White House.
He lives in Boulder County, Colorado with his partner of 50 years, Judith Ansara and has three children.