| 奧 | [ aò ] Austria, Austrian, abbr. for 奧地利|奥地利[Ao4 di4 li4], Olympic, Olympics, abbr. for 奧林匹克|奥林匹克[Ao4 lin2 pi3 ke4] |
| 奧 | [ aò ] obscure, mysterious |
| 奧丁 | [ aò dīng ] Odin (god in Norse mythology) |
| 奧丁諧振器 | [ aò dīng xié zhèn qì ] Oudin coil, Oudin resonator |
| 奧什 | [ aò shí ] Osh (city in Kyrgyzstan) |
| 奧克拉荷馬 | [ aò kè lā hé mǎ ] Oklahoma, US state (Tw) |
| 奧克拉荷馬州 | [ aò kè lā hé mǎ zhoū ] Oklahoma, US state (Tw) |
| 奧克斯納德 | [ aò kè sī nà dé ] Oxnard, California |
| 奧克蘇斯河 | [ aò kè sū sī hé ] Oxus River, alternative name for Amu Darya 阿姆河[A1 mu3 He2] |
| 奧克蘭 | [ aò kè lán ] Auckland (New Zealand city), Oakland (California, US city) |
| 奧切諾斯 | [ aò qiē nuò sī ] Oceanus, a Titan in Greek mythology |
| 奧利奧 | [ aò lì aò ] Oreo cookies |
| 奧利安 | [ aò lì ān ] Orion (constellation, loan word), also written 獵戶座|猎户座 |
| 奧利給 | [ aò lì geǐ ] (neologism c. 2020) come on, you can do it! |
| 奧利維亞 | [ aò lì weí yà ] Olivia (name) |
| 奧匈帝國 | [ aò xiōng dì guó ] Austro-Hungarian Empire 1867-1918 |
| 奧卡姆剃刀 | [ aò kǎ mǔ tì daō ] Occam's razor |
| 奧古斯塔 | [ aò gǔ sī tǎ ] Augusta (place name: capital of Maine, city in Georgia etc) |
| 奧古斯都 | [ aò gǔ sī dū ] Augustus (name) |
| 奧國 | [ aò guó ] Austria |
| 奧地利 | [ aò dì lì ] Austria |
| 奧塞梯 | [ aò sè tī ] Ossetia (a Caucasian republic) |
| 奧塞羅 | [ aò saī luó ] Othello, 1604 tragedy by William Shakespeare 莎士比亞|莎士比亚 |
| 奧妙 | [ aò ] marvelous, mysterious, profound, marvel, wonder |
| 奧姆真理教 | [ aò mǔ zhēn lǐ ] Aum Shinrikyo (or Supreme Truth), the Japanese death cult responsible for the 1995 sarin gas attack on the Tokyo subway |
| 奧委會 | [ aò weǐ huì ] Olympic committee |
| 奧威爾 | [ aò weī ěr ] Orwell (name), George Orwell (1903-1950), British novelist, author of Animal Farm 動物農場|动物农场 and 1984 一九八四年 |
| 奧客 | [ aò kè ] (coll.) (Tw) troublesome customer, obnoxious guest (from Taiwanese 漚客, Tai-lo pr. [àu-kheh]) |
| 奧密克戎 | [ aò mì kè róng ] omicron (Greek letter) |
| 奧巴馬 | [ aò bā mǎ ] Barack Obama (1961-), US Democrat politician, president 2009-2017 |
| 奧布里 | [ aò bù lǐ ] Aubrey (name) |
| 奧康內爾 | [ aò kāng neì ěr ] O'Connell (name), Daniel O'Connell (1775-1847), Irish nationalist and catholic activist |
| 奧康納 | [ aò kāng nà ] O'Connor (name), Thomas Power O'Connor (1848-1929), Irish journalist and nationalist political leader |
| 奧德修斯 | [ aò dé xiū sī ] Odysseus |
| 奧德賽 | [ aò dé saì ] Homer's Odyssey |
| 奧托 | [ aò tuō ] Otto |
| 奧援 | [ aò yuán ] hidden ally, powerful support, support, backup |
| 奧數 | [ aò shù ] International Mathematical Olympiad (IMO), abbr. for 國際奧林匹克數學競賽|国际奥林匹克数学竞赛[Guo2 ji4 Ao4 lin2 pi3 ke4 Shu4 xue2 Jing4 sai4] |
| 奧數 | [ aò shù ] olympiad mathematics, competition math |
| 奧斯丁 | [ aò sī dīng ] Austin or Austen (name), Austin, Texas, also written 奧斯汀|奥斯汀[Ao4 si1 ting1] |
| 奧斯卡 | [ aò sī kǎ ] (film industry) Oscar (Academy Award), CL:屆|届[jie4], (name) Oscar |
| 奧斯卡金像獎 | [ aò sī kǎ jīn xiàng jiǎng ] Academy Awards, Oscars, CL:屆|届[jie4] |
| 奧斯威辛 | [ aò sī weī xīn ] Auschwitz (concentration camp) |
| 奧斯威辛集中營 | [ aò sī weī xīn jí zhōng yíng ] Auschwitz concentration camp |
| 奧斯曼 | [ aò sī màn ] Ottoman (empire) |
| 奧斯曼帝國 | [ aò sī màn dì guó ] the Ottoman Empire |
| 奧斯汀 | [ aò sī tīng ] Austin or Austen (name), Austin, Texas |
| 奧斯特洛夫斯基 | [ aò sī tè luò fū sī jī ] Nikolai Ostrovsky (1904-1936), Soviet socialist realist writer, Alexander Ostrovsky (1823-1886), Russian playwright |
| 奧斯瓦爾德 | [ aò sī wǎ ěr dé ] Oswald |
| 奧斯維辛 | [ aò sī weí xīn ] Auschwitz (concentration camp) |
| 奧斯陸 | [ aò sī lù ] Oslo, capital of Norway |
| 奧會 | [ aò huì ] (International or national) Olympic Committee (abbr. for 奧林匹克委員會|奥林匹克委员会), Olympic Games (abbr. for 奧林匹克運動會|奥林匹克运动会) |
| 奧朗德 | [ aò lǎng dé ] François Hollande (1954-), French Socialist politician, president of France 2012-2017 |
| 奧林匹亞 | [ aò lín pǐ yà ] Olympia (Greece) |
| 奧林匹克 | [ aò lín pǐ kè ] Olympic |
| 奧林匹克運動會 | [ aò lín pǐ kè yùn dòng huì ] Olympic Games, the Olympics |
| 奧林匹克運動會組織委員會 | [ aò lín pǐ kè yùn dòng huì zǔ zhī weǐ yuán huì ] Olympic Organizing Committee, abbr. to 奧組委|奥组委 |
| 奧林匹克體育場 | [ aò lín pǐ kè tǐ yù chǎng ] Olympic Stadium |
| 奧林巴斯 | [ aò lín bā sī ] Olympus, Japanese manufacturer of cameras and optical instruments |
| 奧波萊 | [ aò bō laí ] Opole, city in Poland |
| 奧爾巴尼 | [ aò ěr bā ní ] Albany, New York |
| 奧爾布賴特 | [ aò ěr bù laì tè ] Madeleine Albright (1937-), former US Secretary of State |
| 奧爾德尼島 | [ aò ěr dé ní daǒ ] Alderney (Channel Islands) |
| 奧爾良 | [ aò ěr liáng ] Orléans |
| 奧特曼 | [ aò tè màn ] Ultraman, Japanese science fiction superhero |
| 奧特朗托 | [ aò tè lǎng tuō ] Otranto city on the southeast heel of Italy |
| 奧特朗托海峽 | [ aò tè lǎng tuō haǐ xiá ] Strait of Otranto between the heel of Italy and Albania |
| 奧特萊斯 | [ aò tè laí sī ] outlets (loanword), retail outlet (e.g. specializing in seconds of famous brands), factory outlet retail store |
| 奧盧 | [ aò lú ] Oulu (city in Finland) |
| 奧祕 | [ aò mì ] secret, mystery |
| 奧米伽 | [ aò mǐ gā ] omega (Greek letter Ωω) |
| 奧米可戎 | [ aò mǐ kě róng ] omicron (Greek letter Οο) |
| 奧納西斯 | [ aò nà xī sī ] Onassis (name), Aristotle Onassis (1906-1975), Greek shipping magnate |
| 奧組委 | [ aò zǔ weǐ ] Olympic organizing committee, abbr. for 奧林匹克運動會組織委員會|奥林匹克运动会组织委员会 |
| 奧維耶多 | [ aò weí yē duō ] Oviedo (Asturian: Uviéu), capital of Asturias in northwest Spain |
| 奧胡斯 | [ aò hú sī ] Aarhus, city in Denmark |
| 奧臘涅斯塔德 | [ aò là niè sī tǎ dé ] Oranjestad, capital of Aruba |
| 奧蘭多 | [ aò lán duō ] Orlando |
| 奧蘭群島 | [ aò lán qún daǒ ] Åland Islands, Finland |
| 奧西娜斯 | [ aò xī nuó sī ] Oceanus, a Titan in Greek mythology |
| 奧賴恩 | [ aò laì ēn ] Orion (NASA spacecraft) |
| 奧賽羅 | [ aò saì luó ] Othello (play by Shakespeare) |
| 奧迪 | [ aò dí ] Audi |
| 奧迪修斯 | [ aò dí xiū sī ] Odysseus, hero of Homer's Odyssey |
| 奧迹 | [ aò jì ] Holy mystery, Holy sacrament (of Orthodox church) |
| 奧運 | [ aò yùn ] abbr. for 奧林匹克運動會|奥林匹克运动会, Olympic Games, the Olympics |
| 奧運會 | [ aò yùn huì ] abbr. for 奧林匹克運動會|奥林匹克运动会, Olympic Games, the Olympics |
| 奧運村 | [ aò yùn cūn ] Olympic Village |
| 奧運賽 | [ aò yùn saì ] Olympic Games |
| 奧里薩邦 | [ aò lǐ sà bāng ] Odisha (formerly Orissa), eastern Indian state |
| 奧里里亞 | [ aò lǐ lǐ yà ] Aurelia, a hypothetical planet |
| 奧陌陌 | [ aò mò mò ] ʻOumuamua (interstellar object) |
| 奧陶系 | [ aò taó xì ] Ordovician system (geology), see 奧陶紀|奥陶纪 |
| 奧陶紀 | [ aò taó jì ] Ordovician (geological period 495-440m years ago) |
| 奧馬哈 | [ aò mǎ hā ] Omaha |
| 奧馬爾 | [ aò mǎ ěr ] Omar (Arabic name) |
| 奧黛莉 | [ aò daì lì ] Audrey, variant of 奧黛麗|奥黛丽[Ao4 dai4 li4] |
| 奧黛麗 | [ aò daì lì ] Audrey |
| ⇒ 亞爾發和奧米加 | [ yà ěr fā hé aò mǐ jiā ] Alpha and Omega |
| ⇒ 伊斯帕尼奧拉 | [ yī sī pà ní aò lā ] Hispaniola (Caribbean island including Haiti and the Dominican Republic) |
| ⇒ 克莉奧佩特拉 | [ kè lì aò peì tè lā ] Cleopatra (c. 70-30 BC), queen of Egypt |
| ⇒ 克里奧爾語 | [ kè lǐ aò ěr yǔ ] creole language |
| ⇒ 冬奧會 | [ dōng aò huì ] Winter Olympics |
| ⇒ 冬殘奧會 | [ dōng cán aò huì ] Winter Paralympics |
| ⇒ 南奧塞梯 | [ nán aò saī tī ] South Ossetia |
| ⇒ 喬治b7奧威爾 | [ zhì aò weī ěr ] George Orwell (1903-1950), British novelist, author of Animal Farm 動物農場|动物农场 and 1984 |
| ⇒ 國奧會 | [ guó aò huì ] national Olympic committee, abbr. for 國際奧委會|国际奥委会 International Olympic committee |
| ⇒ 國際奧委會 | [ guó jì aò weǐ huì ] International Olympic Committee |
| ⇒ 國際奧林匹克委員會 | [ guó jì aò lín pǐ kè weǐ yuán huì ] International Olympic Committee |
| ⇒ 埃奧羅斯 | [ aī aò luó sī ] Aeolus, Greek God of winds |
| ⇒ 奧利奧 | [ aò lì aò ] Oreo cookies |
| ⇒ 安東尼與克莉奧佩特拉 | [ ān dōng ní yǔ kè lì aò peì tè lā ] Anthony and Cleopatra, 1606 tragedy by William Shakespeare 莎士比亞|莎士比亚 |
| ⇒ 怪人奧爾b7揚科維奇 | [ rén aò ěr yáng kē weí qí ] "Weird Al" Yankovic (1959-), US singer and writer of parody songs |
| ⇒ 愛奧尼亞海 | [ aì aò ní yà haǐ ] Ionian Sea between Italy and Greece |
| ⇒ 愛奧華 | [ aì aò huá ] Iowa, US state |
| ⇒ 愛奧華州 | [ aì aò huá zhoū ] Iowa, US state |
| ⇒ 戴奧辛 | [ daì aò xīn ] dioxin, carcinogenic heterocyclic hydrocarbon (esp. Taiwan usage) |
| ⇒ 拉齊奧 | [ lā qí aò ] Lazio (region in Italy) |
| ⇒ 新奧爾良 | [ xīn aò ěr liáng ] New Orleans, Louisiana |
| ⇒ 殘奧 | [ cán aò ] Paralympics, same as Paralympic Games 殘奧會|残奥会[Can2 Ao4 hui4] |
| ⇒ 殘奧會 | [ cán aò huì ] Paralympic Games |
| ⇒ 沙奎爾b7奧尼爾 | [ shā kuí ěr aò ní ěr ] Shaquille O'Neal (1972-), former NBA star |
| ⇒ 派力奧 | [ paì lì aò ] Fiat Palio |
| ⇒ 深奧 | [ shēn aò ] profound, abstruse, recondite, profoundly |
| ⇒ 潭奧 | [ tán aò ] profound, deep |
| ⇒ 特奧會 | [ tè aò huì ] Special Olympics |
| ⇒ 狄奧多 | [ dí aò duō ] Theodor (name) |
| ⇒ 狄奧多b7阿多諾 | [ dí aò duō ā duō nuò ] Theodor Ludwig Wiesengrund Adorno (1903-1969), German sociologist, philosopher, musicologist, and composer |
| ⇒ 玄奧 | [ xuán aò ] abstruse, profound mystery, the mysteries of the universe |
| ⇒ 珍b7奧斯汀 | [ zhēn aò sī tīng ] Jane Austen (1775-1817), English novelist, also written 簡·奧斯汀|简·奥斯汀[Jian3 · Ao4 si1 ting1] |
| ⇒ 畢尼奧夫 | [ bì ní aò fū ] Hugo Benioff (1899-1968), Caltech seismologist |
| ⇒ 畢尼奧夫帶 | [ bì ní aò fū daì ] Benioff zone (geology), also called Wadati-Benioff zone |
| ⇒ 神奧 | [ shén aò ] mysterious, an enigma |
| ⇒ 科利奧蘭納斯 | [ kē lì aò lán nà sī ] Coriolanus, 1607 tragedy by William Shakespeare 莎士比亞|莎士比亚 |
| ⇒ 紐奧良 | [ niǔ aò liáng ] New Orleans, Louisiana |
| ⇒ 羅馬里奧 | [ luó mǎ lǐ aò ] Romário |
| ⇒ 聖奧古斯丁 | [ shèng aò gǔ sī dīng ] St Augustine, Aurelius Augustinus (354-430), theologian and Christian philosopher, Sankt Augustin, suburb of Beuel, Bonn, Germany |
| ⇒ 聖安東尼奧 | [ shèng ān dōng ní aò ] San Antonio, Texas |
| ⇒ 艾奧瓦 | [ aì aò wǎ ] Iowa, US state |
| ⇒ 艾奧瓦州 | [ aì aò wǎ zhoū ] Iowa, US state |
| ⇒ 費奧多爾 | [ feì aò duō ěr ] Theodor of Fyodor (name) |
| ⇒ 路易斯b7伊納西奧b7盧拉b7達席爾瓦 | [ lù yì sī yī nà xī aò lú lā dá xí ěr wǎ ] Luiz Inácio Lula da Silva, the thirty-fifth president of Brazil, Lula |
| ⇒ 迪奧 | [ dí aò ] Dior (brand name) |
| ⇒ 里奧斯 | [ lǐ aò sī ] Ríos (name) |
| ⇒ 里奧格蘭德 | [ lǐ aò gé lán dé ] Rio Grande (Brasil) |
| ⇒ 重整奧思定會 | [ zhòng zhěng aò sī dìng huì ] Order of Augustinian Recollects, a mendicant Catholic religious order of friars and nuns |
| ⇒ 閫奧 | [ kǔn aò ] innermost room, (fig.) heart |
| ⇒ 馬可b7奧勒留 | [ mǎ kě aò leī liú ] Marcus Aurelius (121-180), Roman Emperor |
| ⇒ 馬里奧 | [ mǎ lǐ aò ] Mario (name) |