O 'l Eary JL - Oberly LW
- O 'l Eary JL - O'cain CF
- O'cain D - O'day P
- O'day PA - O'fallon LR
- O'fallon M - O'heir JM
- O'heir JT - O'malley BO
- O'malley BP - O'neill VM
- O'neill W - O'sullivan DB
- O'sullivan DC - Oasan AB
- Oasba PK - Obel P
- Obel PI - Oberly LW
Oberly R - Oettrich K
- Oberly R - Obikhod A
- Obiki T - Obregón JL
- Obregón L - Ocampo-garcía B
- Ocampo-gómez AM - Ochoa JI
- Ochoa JJ - Oczkowski WJ
- Oczkowski Z - Odel J
- Odel JA - Odintsova EA
- Odintsova EK - Oduwole AD
- Oduwole AM - Oelofse D
- Oelofse L - Oettrich K
Oetzel C - Ojasti J
- Oetzel C - Ofosu FA
- Ofosu G - Ogborn RO
- Ogborn SE - Ogiwara J
- Ogiwara K - Oguejiofor CJ
- Oguejiofor I - Oh E
- Oh EA - Ohgitani S
- Ohgitani T - Ohlsen SR
- Ohlsen V - Ohorodnik PV
- Ohorodnik S - Ohwa M
- Ohwa T - Ojasti J
Ojaveer E - Olgin G
- Ojaveer E - Okagawa Y
- Okagbare GO - Okei A
- Okeibunor J - Okland RK
- Okland S - Okrzynski TW
- Okrész L - Okuneva EIU
- Okuneva GL - Olafsdóttir T
- Olafsen A - Olaya D
- Olaya De Morales P - Oldham EE
- Oldham ER - Olenec CA
- Olenek K - Olgin G
Olgin J - Omori N
- Olgin J - Oliva SR
- Oliva SU - Oliveira RP
- Oliveira RR - Olivero WC
- Olivero-bastidas A - Oller JL
- Oller JM - Olmsted VK
- Olmsted W - Olsen-vetland P
- Olsen-winner CL - Olszowska AJ
- Olszowska E - Olyphant GA
- Olypher A - Omelianenko NP
- Omelianiuk M - Omori N
Omori O - Orazi F
- Omori O - Oncins Torres R
- Oncioiu P - Ong HK
- Ong HL - Onjia AE
- Onjoro EO - Onsun K
- Onsun N - Ooda K
- Oodaira H - Ooshiro S
- Ooshiro T - Opalinski P
- Opalinskiĭ VN - Opjordsmoen S
- Opkeh ES - Oprić M
- Oprić S - Orazi F
Orazi G - Ortigosa-rodríguez S
- Orazi G - Ordodi VL
- Ordoegh B - Orella EE
- Orellan Huerta J - Organdzhanian IK
- Organe G - Orisa M
- Orisadare BO - Orlosky MJ
- Orlotti C - Ormond MB
- Ormond P - Oroz J
- Oroz JS - Orsato A
- Orsato R - Ortega Juaristi M
- Ortega K - Ortigosa-rodríguez S
Ortigoso J - Osterwalder T
- Ortigoso J - Ortiz-pelaez A
- Ortiz-perez EG - Ortíz-garcía CF
- Ortíz-garcía D - Osadchaia LA
- Osadchaia LI - Osborne RB
- Osborne RC - Osher L
- Osher LJ - Osipkova TA
- Osipo C - Osmark P
- Osmańska M - Ossen R
- Ossen W - Ostendorf MJ
- Ostendorf N - Osterwalder T
Osterwalder TP - Ouzilou-girod J
- Osterwalder TP - Ostroumov AN
- Ostroumov E - Osuobeni EP
- Osuoha E - Oteiza A
- Oteiza Arjona A - Otmakhova NA
- Otmakov VN - Otte M
- Otte MJ - Otto RH
- Otto RJ - Ouahchi K
- Ouahchi N - Ouellette Kobasa SC
- Ouellette L - Ouriemchi EM
- Ouriemchi IM - Ouzilou-girod J
Ouzineb K - O’neil C
- Ouzineb K - Overbeek GB
- Overbeek GJ - Overweg NI
- Overweg NT - Owen AS
- Owen AT - Owren PA
- Owren T - Oye I
- Oye JE - Ozaskinli S
- Ozaslan A - Ozen AM
- Ozen AS - Ozkan AM
- Ozkan AN - Oztekin CV
- Oztekin D - O’neil C