Names
- Odendahl, Theresa2
- Ostrom Workshop1
- Ostrom, Elinor1
- Ostrom, Vincent, 1919-20121
- Pacific Oaks1
- Patman, Wright1
- Philanthropic Roundtable1
- Pifer, Alan2
- Portee, Barbara1
- Puerto Rican Legal Defense and Education Fund1
- Putney School1
- Raun, Rob1
- Reagan, Ronald Wilson1
- Rees, Albert1
- Resource Renewal Institute1
- Robert Wood Johnson Foundation1
- Rockefeller1
- Rockefeller Brothers Fund3
- Rockefeller Family Fund1
- Rockefeller Foundation5