(4901) O Briain / Ó Briain
   (3083) OAFA
  (97786) Oauam
  (14217) Oaxaca
  (16563) Ob
  (34044) Obafial
  (21712) Obaid
 (261108) Obanhelian
 (187669) Obastromca
  (27740) Obatomoyuki
  (29402) Obelix
  (52334) Oberammergau
   (5489) Oberkochen
   (9236) Obermair
   (3275) Oberndorfer
  (96506) Oberosterreich / Oberösterreich
   (6293) Oberpfalz
   (9253) Oberth
 (250370) Obertocitterio
 (207763) Oberursel
   (6669) Obi
   (8471) Obrant
   (4623) Obraztsova
  (21774) O'Brien
   (3128) Obruchev
  (99193) Obsfabra
  (11612) Obu
   (9914) Obukhova
  (15870) Oburka / Obůrka
 (177120) Ocampo Uria / Ocampo Uría
 (296587) Ocana / Ocaña
  (23238) Ocasio-Cortez
   (6525) Ocastron
  (20081) Occhialini
  (12571) Occhiogrosso
   (5067) Occidental
    (224) Oceana
  (61404) Ocenasek / Očenášek
   (6024) Ochanomizu
  (20574) Ochinero
 (117703) Ochoa
   (7343) Ockeghem
   (9496) Ockels
    (475) Ocllo
   (4927) O'Connell
   (8357) O'Connor
    (598) Octavia
   (7052) Octaviabutler
  (58498) Octaviopaz
   (1144) Oda
   (9435) Odafukashi
   (8952) ODAS
  (17865) Odden
 (105613) Odedaharonson
 (156939) Odegard
  (34786) Odeh
  (25234) Odell
  (10948) Odenwald
   (2606) Odessa
 (108072) Odifreddi
   (3989) Odin
   (2775) Odishaw
 (552708) Odmangovender
  (12749) Odokaigan
   (4637) Odorico
  (27239) O'Dorney
   (1143) Odysseus
   (9713) Oeax
  (23995) Oechsle
   (8602) Oedicnemus
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 (164585) Oenomaos
    (215) Oenone
  (16583) Oersted
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   (9825) Oetken
  (19676) Ofeliaguilar
  (10820) Offenbach
 (175259) Offenberger
   (7639) Offutt
  (17051) Oflynn
  (63897) Ofunato
   (5158) Ogarev
  (10169) Ogasawara
  (12221) Ogatakoan
   (6389) Ogawa
 (120735) Ogawakiyoshi
  (14315) Ogawamachi
  (23980) Ogden
  (28127) Ogden-Stenerson
  (14116) Ogea
   (7476) Ogilsbie
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   (4013) Ogiria
   (7955) Ogiwara
 (189011) Ogmios
  (34466) Ognicholls
  (14998) Ogosemachi
  (33056) Ogunimachi
  (31105) Oguniyamagata
  (11817) Oguri
   (1259) Ogyalla / Ógyalla
  (32919) Ohashi
   (4675) Ohboke
   (5970) Ohdohrikouen
   (2351) O'Higgins
    (439) Ohio
  (65716) Ohkinohama
   (7898) Ohkuma
  (24750) Ohm
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   (9062) Ohnishi
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   (5180) Ohno
   (4801) Ohre / Ohře
  (61189) Ohsadaharu
   (3626) Ohsaki
  (12479) Ohshimaosamu
   (8912) Ohshimatake
   (8733) Ohsugi
  (24673) Ohsugitadao
   (5868) Ohta
   (2960) Ohtaki
  (10138) Ohtanihiroshi
  (13640) Ohtateruaki
   (7526) Ohtsuka
  (14922) Ohyama
 (110293) Oia
 (192220) Oicles
   (2667) Oikawa
   (9907) Oileus
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   (3843) OISCA
   (3379) Oishi
  (42516) Oistrach
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   (4458) Oizumi
   (5080) Oja
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  (21054) Ojmjakon
  (16494) Oka
   (6737) Okabayashi
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   (8416) Okada
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  (15316) Okagakimachi
   (6244) Okamoto
   (4505) Okamura
   (9845) Okamuraosamu
  (12439) Okasaki
  (30184) Okasinski
  (36782) Okauchitakashige
   (1701) Okavango
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   (6585) O'Keefe
   (8188) Okegaya
 (149831) Okeke
  (46563) Oken
   (4042) Okhotsk
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 (377144) Okietex
   (8428) Okiko
  (10916) Okina-Ouna
  (13188) Okinawa
  (30888) Okitsumisaki
  (13688) Oklahoma
 (379732) Oklay
   (6838) Okuda
  (23775) Okudaira
   (8099) Okudoiyoshimi
   (3149) Okudzhava
   (5174) Okugi
  (12810) Okumiomote
  (10990) Okunev
   (7769) Okuni
  (11288) Okunohosomichi
  (11959) Okunokeno
 (571535) Okunoto
   (5125) Okushiri
   (5142) Okutama
  (52872) Okyrhoe
   (7242) Okyudo
 (445917) Ola
 (554648) Olaffischer
  (44479) Olaheszter / Oláheszter
 (541776) Olahkatalin
  (11935) Olakarlsson
  (18984) Olathe
   (2454) Olaus Magnus
   (8869) Olausgutho
   (1002) Olbersia
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  (10515) Old Joe
   (5656) Oldfield
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 (333050) Olds
   (2897) Ole Romer / Ole Römer
   (9242) Olea
  (28592) O'Leary
   (7726) Olegbykov
  (19127) Olegefremov
   (3501) Olegiya
  (15702) Olegkotov
 (278200) Olegpopov
 (542084) Olegverkhodanov
 (305287) Olegyankov
  (17700) Oleksiygolubov
 (604468) Olenici
   (2438) Oleshko
 (217420) Olevsk
 (251449) Olexakorol'
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   (9034) Oleyuria
    (304) Olga
  (21661) Olgagermani
 (207695) Olgakopyl
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  (24637) Ol'gusha
   (9684) Olieslagers
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  (12138) Olinwilson
 (118769) Olivas
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 (102234) Olivebyrne
   (2177) Oliver
  (28711) Oliverburnett
  (44216) Olivercabasa
  (12166) Oliverherrmann
  (34198) Oliverleitner
  (10716) Olivermorton
  (28623) Olivermoses
  (12167) Olivermuller / Olivermüller
  (84928) Oliversacks
 (129114) Oliverwalthall
 (201019) Oliverwhite
    (835) Olivia
 (164676) Oliviabaraldi
 (129082) Oliviabillett
  (24129) Oliviahu
  (27593) Oliviamarie
 (281007) Oliviaperrotto
  (25801) Oliviaschwob
  (59162) Olivierbienayme / Olivierbienaymé
   (2201) Oljato
  (10465) Olkin
   (5608) Olmos
   (3287) Olmstead
   (8697) Olofsson
  (30564) Olomouc
   (5209) Oloosson
  (13411) OLRAP
   (2310) Olshaniya
   (5166) Olson
    (582) Olympia
   (1022) Olympiada
  (22754) Olympus
 (221566) Omarcustodio
   (3095) Omarkhayyam
  (34544) Omarsanreyes
  (24517) Omattage
   (3637) O'Meara
 (241153) Omegagigia
 (142091) Omerblaes
  (28983) Omergranek
  (33624) Omersiddiqui
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  (24640) Omiwa
  (35295) Omo
   (9375) Omodaka
   (6971) Omogokei
 (187531) Omorichugakkou
   (3406) Omsk
 (353409) Onaka
   (6569) Ondaatje
  (16817) Onderlicka / Onderlička
   (7204) Ondrejov / Ondřejov
  (16273) Oneill
 (289992) Onfray
 (763488) Oniciuc
  (10849) Onigiri
   (6987) Onioshidashi
   (4353) Onizaki
   (3355) Onizuka
  (31918) Onkargujral
  (12868) Onken
   (5294) Onnetoh
   (1389) Onnie
  (31581) Onnink
   (7678) Onoda
   (8939) Onodajunjiro
  (10163) Onomichi
   (9599) Onotomoko
   (2330) Ontake
 (374710) `O`o
  (12800) Oobayashiarata
  (11151) Oodaigahara
   (8533) Oohira
  (10627) Ookuninushi
  (11152) Oomine
   (2649) Oongaq
   (1691) Oort
   (1738) Oosterhoff
  (27882) Ootanihideji
  (23744) Ootsubo
   (5214) Oozora
  (90732) Opdebeeck
  (10692) Opeil
   (5055) Opekushin
  (69423) Openuni
  (52767) Ophelestes
    (171) Ophelia
  (20729) Opheltius
   (2099) Opik / Öpik
 (221917) Opites
  (39167) Opitom
 (136518) Opitz
    (255) Oppavia
 (343981) Oppenheim
  (67085) Oppenheimer
   (1492) Oppolzer
  (39382) Opportunity
 (555152) Oproiu
   (2736) Ops
   (1195) Orangia
  (58095) Oranienstein
  (12151) Oranje-Nassau
 (127516) Oravetz
  (11361) Orbinskij
 (291849) Orchestralondon
   (1080) Orchis
  (48471) Orchiston
  (90482) Orcus
  (33437) Ordenovic
   (2406) Orelskaya
  (22932) Orenbrecher
  (27709) Orenburg
   (8982) Oreshek
  (12576) Oresme
   (5347) Orestelesca
  (13475) Orestes
  (21125) Orff
 (225231) Orhazoltan / Orhazoltán
   (4540) Oriani
   (7489) Oribe
  (11926) Orinoco
    (701) Oriola
 (591763) Orishut'
 (330836) Orius
  (11585) Orlandelassus
  (35324) Orlandi
 (192609) Orlaparker
  (73199) Orlece
   (2188) Orlenok
  (11339) Orlik / Orlík
   (2724) Orlov
  (34252) Orlovsky
  (13312) Orlowitz
   (2517) Orma
 (167976) Ormsbymitchel
    (350) Ornamenta
  (17777) Ornicar
   (6795) Ornskoldsvik / Örnsköldsvik
   (4733) ORO
  (19224) Orosei
   (4201) Orosz
   (9524) O'Rourke
   (3361) Orpheus
   (5284) Orsilocus
 (130158) Orsonjohn
  (89734) Orsoperuzzi
 (576870) Orszaglili
  (13132) Ortelius
   (4533) Orth
   (2329) Orthos
  (10665) Ortigao / Ortigão
   (8944) Ortigara
   (4436) Ortizmoreno
  (11681) Ortner
 (378370) Orton
    (551) Ortrud
   (2043) Ortutay
  (48482) Oruki
  (21900) Orus
  (11246) Orvillewright
  (11020) Orwell
   (5823) Oryo
  (17546) Osadakentaro
   (7434) Osaka
   (7140) Osaki
  (11930) Osamu
  (19310) Osawa
  (43889) Osawatakaomi
 (105222) Oscarsaa
  (12258) Oscarwilde
  (96200) Oschin
  (11515) Oshijyo
   (5592) Oshima
  (13569) Oshu
   (3593) Osip
   (4986) Osipovia
  (10259) Osipovyurij
   (1923) Osiris
   (1837) Osita
    (750) Oskar
  (59389) Oskarvonmiller
  (28287) Osmanov
   (7305) Ossakajusto
   (7584) Ossietzky
  (59828) Ossikar
   (1369) Ostanina
   (5935) Ostankino
   (7113) Ostapbender
    (343) Ostara
   (2525) O'Steen
   (9471) Ostend
   (1207) Ostenia
   (6107) Osterbrock
  (10815) Ostergarn / Östergarn
   (6797) Ostersund
  (30186) Ostojic
   (5859) Ostozhenka
   (8442) Ostralegus
  (30153) Ostrander
  (11128) Ostravia
  (12146) Ostriker
   (3169) Ostro
   (2681) Ostrovskij
  (11844) Ostwald
  (29427) Oswaldthomas
  (26283) Oswalt
  (16406) Oszkiewicz
  (26127) Otakasakajyo
   (5975) Otakemayumi
   (9844) Otani
   (4491) Otaru
  (21328) Otashi
   (7752) Otauchunokai
   (4405) Otava
   (4979) Otawara
   (4840) Otaynang
  (16644) Otemaedaigaku
   (1529) Oterma
   (1126) Otero
  (10697) Othonwinter
   (9030) Othryoneus
    (913) Otila
  (21270) Otokar
   (3911) Otomo
   (7364) Otonkucera / Otonkučera
 (385571) Otrera
   (3738) Ots
    (670) Ottegebe
    (994) Otthild
  (22449) Ottijeff
    (401) Ottilia
 (128627) Ottmarsheim
   (2962) Otto
   (2108) Otto Schmidt
   (2227) Otto Struve
  (10787) Ottoburkard
  (10709) Ottofranz
 (555120) Ottoguthier
  (19126) Ottohahn
 (359103) Ottopiene
  (35239) Ottoseydl
  (14468) Ottostern
   (6657) Otukyo
   (5803) Otzi / Ötzi
 (399745) Ouchaou
 (381260) Ouellette
   (3089) Oujianquan
   (7463) Oukawamine
   (1512) Oulu
 (175397) Oumousangare / Oumousangaré
   (4644) Oumu
   (1473) Ounas
  (22395) Ourakenji
  (12367) Ourinhos
  (10771) Ouro Preto / Ouro Prêto
  (23871) Ousha
   (1396) Outeniqua
 (195853) Ouyangtianjing
   (8919) Ouyangziyuan
  (21574) Ouzan
  (19625) Ovaitt
 (257261) Ovechkin
  (67308) Oveges / Öveges
   (5038) Overbeek
 (711327) Ovidiuignat
   (2800) Ovidius
 (221073) Ovruch
   (2648) Owa
  (13017) Owakenoomi
 (164792) Owen
  (15608) Owens
   (3464) Owensby
   (9602) Oya
  (19392) Oyamada
   (5912) Oyatoshiyuki
  (10863) Oye
  (34821) Oyetunji
 (434707) Oyfnpripetshik
 (236129) Oysterbay
 (547664) Ozdin
   (7358) Oze
   (6747) Ozegahara
  (10760) Ozeki
   (6839) Ozenuma
  (33471) Ozuna