Football Card Singles - By Player Last Name
- Oakley, Annie
- Oakman, Shawn
- Oates, Bart
- Obama, Barack
- Obee, Terry
- Obomanu, Ben
- O'Brien, Ken
- Ochocinco, Chad
- Ochs, Craig
- O'Connell, Kevin
- O'Connor, Tyler
- Odeyingbo, Dayo
- Odighizuwa, Owamagbe
- Odom, Antwan
- Odom, Phazahn
- Odomes, Nate
- O'Donnell, Neil
- Offerdahl, John
- Ogbah, Emmanuel
- Ogbonnaya, Chris
- Ogbuehi, Cedric
- Ogden, Jonathan
- Ogletree, Alec
- Ogletree, Kevin
- O'Grady, Cheyenne
- Ogundeji, Adetokunbo
- Ojo, Onomo
- Ojulari, Azeez
- Okafor, Alex
- Okam, Frank
- Okeafor, Chike
- Okoronkwo, Ogbonnia
- Okoye, Amobi
- Okoye, Christian
- Okudah, Jeff
- Okung, Russell
- Okwara, Romeo
- Okwo, Michael
- Okwuegbunam, Albert
- O'Leary, Dan
- O'Leary, Nick
- Olinger, Jon
- Oliver, Branden
- Oliver, Ed
- Oliver, Isaiah
- Oliver, Josh
- Oliver, Louis
- Ollison, Qadree
- Olsen, Greg
- Olsen, Merlin
- Olson, Drew
- Oluokun, Foye
- Omenihu, Charles
- Omon, Xavier
- O'Neal, Deltha
- O'Neal, Leslie
- Onobun, Fendi
- Onwualu, James
- Orakpo, Brian
- Orchard, Nate
- Oregon, The Duck (Mascot)
- Orlando, Bo
- Orlovsky, Dan
- Orr, Chris
- Orr, Jonathan
- Orr, Nick
- Orr, Raheem
- Orton, Kyle
- Osborn, K.J.
- Osgood, Kassim
- Ossai, Joseph
- Ostrander, T.C.
- O'Sullivan, J.T.
- Osweiler, Brock
- Otah, Jeff
- Otten, Ryan
- Otto, Jim
- Outlaw, J.J.
- Oweh, Odafe
- Owens, Chad
- Owens, Dan
- Owens, Mel
- Owens, Steve
- Owens, Terrell
- Owusu-Ansah, Akwasi
- Owusu-Koramoah, Jeremiah
- Oxendine, Ken
- Ozigbo, Devine