Timothy M. "Tim" Dunn (born 1955) is an American oil and gas executive, entrepreneur, and prominent conservative philanthropist from Texas. He co-founded and founded CrownQuest Operating, LLC in 1993, a privately held independent exploration and production company specializing in the acquisition, development, and operation of oil and natural gas properties, primarily in the Permian Basin of West Texas and New Mexico. Under Dunn's leadership as president and CEO, CrownQuest has grown into a significant player in the energy sector, with estimated production exceeding 20,000 barrels of oil equivalent per day as of recent reports. Dunn's career in the oil industry spans decades, beginning after his education in business, and he has been instrumental in navigating the volatile energy markets while maintaining a focus on operational efficiency and resource development.

Beyond his business achievements, Dunn is a major donor and key funder to conservative causes, supporting organizations that promote free-market principles, limited government, religious liberty, and traditional family values. He serves on the board of DonorsTrust, a donor-advised fund that facilitates anonymous contributions to right-leaning nonprofits, think tanks, and advocacy groups. His philanthropy, often channeled through family foundations like the Dunn Foundation, has funded entities such as the American Enterprise Institute, the Heritage Foundation, and various Republican political efforts, including super PACs during election cycles. Dunn's giving reflects a deep commitment to ideological conservatism, influenced by his Christian faith and Texas roots.

Dunn maintains a relatively low public profile, residing in the Permian Basin region where his business is headquartered. He has been involved in industry associations and occasionally comments on energy policy, advocating for deregulation and fossil fuel development. While not a political officeholder, his financial influence in conservative networks underscores his role in shaping policy debates on energy, economics, and social issues.