Harry F. Weyher Jr. (August 19, 1921 – March 27, 2002) was an American lawyer and president of the Pioneer Fund from 1958 to 2002. Born in Wilson, North Carolina, Weyher attended the University of North Carolina. After serving in World War II, he graduated magna cum laude from Harvard Law School in 1949, where he was an editor of the Harvard Law Review. Early in his career, he worked for Cravath, Swaine & Moore and served as special assistant attorney general to the New York State Crime Commission. In 1954, he co-founded the New York City firm Olwine, Connelly, Chase, O'Donnell & Weyher. He became an adjunct associate professor at New York University School of Law and a member of the Society of the Cincinnati. Later in his professional career, he was "of counsel" to the law firm of Hollyer