Robert Kinloch "Bob" Massie IV (born August 17, 1956) is an American activist, author, and politician who works on issues of global leadership and corporate accountability, social justice, and climate change. He has created or led several organizations, including Ceres, the Global Reporting Initiative, the Investor Network on Climate Risk, and the New Economy Coalition. His early activism centered on opposition to South Africa's apartheid regime, writing the about the relationship between the US and South Africa in the apartheid era.