philanthropist
n. countablen. a person who gives a lot of money, time, or help to people who need it. They usually support charities or big projects like building schools and hospitals.
n. a person who seeks to promote the welfare of others, typically by the generous donation of money to good causes.
The local philanthropist donated millions to the new library.
After retiring from his tech career, he became a full-time philanthropist focusing on global health initiatives.
While many wealthy individuals make occasional donations, a true philanthropist develops a strategic vision for social change and commits significant resources to long-term systemic improvements.
From philanthropy + -ist; compare French philanthrope.
Often used to describe high-net-worth individuals, though it can apply to anyone making significant charitable contributions.