Proponents
3,644 proponents — individuals, institutions, and schools of thought — cited in the encyclopedia.
- Oliver Storey
- Oliver Wendell Holmes, Jr.
- Olivette Otele
- Olivia Alperstein
- Olivia B. Waxman
- Olivia Miller
- Olivier Véran
- Omar Jadwat
- Omar Qureshi
- Omari Newton
- Omarosa Manigault
- Ontario Human Rights Commission
- Opal Tometi
- Open Society Justice Initiative
- Oprah Winfrey
- Orrin Hatch
- Osama Al-Sharif
- Osita Nwanevu
- Otis Roffman
- Ovid
- Owen Bowcott
- Owen Brigstock-Barron
- Owen Jones
- Oxfam
- Oxford Encyclopaedia of British Literature
- Oxford Languages
- Ozgun Atasoy
- P. W. Botha
- Pam MacKinnon
- Paolo Gentiloni
- Pat McCrory
- Pat Orr
- Pat Quinn
- Pat Scott
- Pat Wyman
- Patricia A. Alexander
- Patricia Bidol
- Patrick Cheney
- Patrick D. Nunn
- Patrick James Morrisey
- Patrick Kane
- Patrick Leahy
- Patrick Nunn
- Patrick O'Flynn
- Patrick Toomey
- Patrick Yoes
- Patrisse Cullors-Brignac
- Patty Hajdu
- Paul A. Boghossian
- Paul A. Gagnon
- Paul Booth
- Paul Brown
- Paul Cairney
- Paul Carus
- Paul David Tripp
- Paul Davies
- Paul Davies Tripp
- Paul DiGiacomo
- Paul Draper
- Paul Goodman