The Lynde and Harry Bradley Foundation, commonly known as the Bradley Foundation, is a major American conservative philanthropic organization based in Milwaukee, Wisconsin. Established in 1942 by industrialists Lynde and Harry Bradley, founders of the Allen-Bradley Company, the foundation was originally created to support educational and charitable causes. Following the 1985 sale of Allen-Bradley to Rockwell International, the foundation was significantly restructured and endowed with substantial assets derived from the company's profits, growing to nearly $1 billion in assets as of 2023. Since 1985, it has disbursed over $1.3 billion in grants and emerged as one of the largest and most influential funders of conservative policy organizations and the broader conservative movement in the United States.

The foundation focuses on policy research, advocacy, litigation, and education in areas such as free-market economics, limited government, national security and foreign affairs, education reform, and the preservation of traditional American and Judeo-Christian values. It supports numerous think tanks, academic institutions, advocacy groups, and religious and educational initiatives that promote individual freedom, economic opportunity, and a strong national defense. Notable grantees include the Heritage Foundation, the American Enterprise Institute, and the Pacific Legal Foundation, as well as DonorsTrust, to which it has contributed hundreds of thousands of dollars over multiple years.

The Bradley Foundation has been particularly active in funding organizations involved in policy debates on welfare reform, school choice, counterterrorism, voter ID laws, affirmative action opposition, and related issues, often channeling resources to shape cultural narratives and electoral outcomes aligned with conservative priorities. It also supports research on national security, economic policy, and international affairs. In recent years, it has announced grants totaling $13 million for 2025 to 115 organizations across Wisconsin, with emphasis on local community development, education, and civic engagement.

Critics have accused the foundation of promoting partisan agendas and funding groups associated with anti-Islamic rhetoric and climate change skepticism. Its board and leadership, drawn from business and policy elites, reflect a commitment to market-oriented solutions and traditional social values. As a key player in conservative philanthropy networks, the Bradley Foundation maintains close ties with influential figures and organizations within the right-wing ecosystem, amplifying its impact through collaborative funding efforts. Its enduring influence underscores its central role in organized conservatism and public policy discourse in the United States.