benefactor
Definitions
A person who gives money or other help to a person or cause.
A patron or supporter who provides financial assistance.
Examples
The anonymous benefactor donated millions of dollars to the city's public library system.
Without the support of a generous benefactor, the struggling artist would have been unable to finish his masterpiece.
The university honored its primary benefactor by naming the new science building after her.
Synonyms
patron sponsor philanthropist supporter donor contributor backer