Diane C. Harrison is the Executive Director of The Lynde and Harry Bradley Foundation, a prominent conservative philanthropic organization based in Milwaukee, Wisconsin, which provides grants to support free-market principles, limited government, and civic renewal. Appointed to this role in 2016, she oversees the foundation's grantmaking activities, directing millions of dollars annually to conservative think tanks, policy organizations, and educational initiatives aligned with right-wing ideologies. Harrison is a key figure in conservative philanthropy networks, leveraging her position to influence funding priorities that advance traditional values and counter progressive causes. She holds board positions in several right-wing nonprofits, including serving on the board of DonorsTrust, a donor-advised fund that enables anonymous contributions to right-leaning nonprofits, further embedding her in networks of influence among wealthy conservative donors. Her work has drawn attention for supporting controversial causes, such as election integrity efforts and opposition to affirmative action, though she maintains a relatively low public profile outside philanthropic circles. Prior to joining the Bradley Foundation, Harrison held leadership roles in the nonprofit sector, including positions at organizations focused on donor-advised funds and conservative giving. Her career reflects a commitment to conservative principles, with her leadership at the Bradley Foundation playing a pivotal role in sustaining an ecosystem of right-wing advocacy groups. While details of her early life and education remain less documented, her professional trajectory underscores her as a strategic operator in the world of ideological grantmaking.