Philip David Radford (born January 2, 1976) is an American activist who served as the executive director of Greenpeace USA. He is the founder and President of Progressive Power Lab, an organization that incubates companies and non-profits that build capacity for progressive organizations, including a donor advisory organization Champion.us, the Progressive Multiplier Fund and Membership Drive. Radford is a co-founder of the Democracy Initiative, was founder and executive director of Power Shift, and is a board member of the Mertz Gilmore Foundation. He has a background in grassroots organizing, corporate social responsibility, climate change, and clean energy.