| 公開 | こうかい | opening to the public; making available to the public; exhibiting; unveiling | n2 |
| 公式 | こうしき | official; formal; formula (e.g. mathematical); official (social media) account (of a company, organization, etc.) | n2 |
| 公 | おおやけ | official; governmental; formal; public (use, matter, forum, etc.) | |
| 主人公 | しゅじんこう | protagonist; main character; hero; heroine | n2 |
| 公園 | こうえん | (public) park | n5 |
| 奉公 | ほうこう | live-in domestic service; live-in apprenticeship; public duty; public service | n4 |
| 公然 | こうぜん | open; public; official; overt | |
| 公平 | こうへい | fairness; impartiality; justice; objectivity | n2 |
| 公表 | こうひょう | official announcement; proclamation | n2 |
| 奉公人 | ほうこうにん | servant; employee | |
| 公演 | こうえん | public performance; exhibition in a foreign country | n2 |
| 公共 | こうきょう | public (facilities, service, etc.); communal | n3 |
| 公衆 | こうしゅう | the public; general public | n2 |
| 公開日 | こうかいひ | release date; publication date; opening day; open day | |
| 公認 | こうにん | official recognition; official approval; certification; authorization | |
| 公卿 | くぎょう | high-ranking court noble; senior court official; kugyō; three lords and nine ministers (of the ancient Chinese government) | |
| 貴公 | きこう | you | n2 |
| 公的 | こうてき | public; official | n1 |
| 公募 | こうぼ | public appeal (e.g. for contributions); public advertisement (of a post); open recruitment; public offering (of securities) | |
| 公儀 | こうぎ | imperial court; shogunate government; authorities; public affairs | n3 |
| 公言 | こうげん | declaration; profession | n1 |
| 中央公論 | ちゅうおうこうろん | Chūōkōron (monthly literary magazine) | |
| 公爵 | こうしゃく | prince; duke | |
| 公正 | こうせい | justice; fairness; impartiality | n2 |
| 不公平 | ふこうへい | unfairness; injustice; partiality | n2 |
| 公益 | こうえき | public interest; public benefit; public good | n1 |
| 公論 | こうろん | public opinion; unbiased criticism; unbiassed criticism | |
| 貴公子 | きこうし | young nobleman; scion of a noble family; princely young man; man with an aristocratic air | |
| 公使 | こうし | envoy; diplomat below the rank of ambassador (e.g. deputy chief of mission, charge d'affaires); minister (of legation) | n2 |
| 公家 | くげ | court noble; nobility; kuge; Imperial Court | |
| 公事 | こうじ | government business | n4 |
| 公務 | こうむ | official business; public business | |
| 公私 | こうし | public and private matters; official and personal affairs; professional and personal lives | n2 |
| 公布 | こうふ | official proclamation; announcement; promulgation (e.g. of regulations) | n1 |
| 公判 | こうはん | public hearing; trial | n3 |
| 公立 | こうりつ | public (institution) | n2 |
| 公明正大 | こうめいせいだい | fair; just and upright; open and honest; aboveboard | |
| 公子 | こうし | young nobleman | n2 |
| 公方 | くぼう | public affairs; the court; the shogun; the shogunate | |
| 公会堂 | こうかいどう | town hall; public hall | |
| 公使館 | こうしかん | legation | |
| 公用 | こうよう | official business; government business; public business; company duties | n2 |
| 公達 | きんだち | kings; children of nobles; young nobleman | |
| 郭公 | かっこう | common cuckoo (Cuculus canorus) | n4 |
| 公務員 | こうむいん | public employee; government employee; public-sector worker; public servant | n3 |
| 公民 | こうみん | citizen; civics (school subject) | |
| 公債 | こうさい | public debt; public bond; government securities | n1 |
| 公式サイト | こうしきサイト | official website | |
| 公明 | こうめい | fairness; openness; impartiality; Komeito (Japanese political party) | n1 |
| 公式戦 | こうしきせん | official match; regular game; regular-season game; formal match | |
| 諸公 | しょこう | high-ranking officials; ministers; ladies and gentlemen; everyone | |
| 蒲公英 | たんぽぽ | dandelion (esp. species Taraxacum platycarpum) | n2 |
| 国公立 | こっこうりつ | national and public | |
| 公道 | こうどう | public road; highway; righteousness; justice | n4 |
| 非公式 | ひこうしき | informal; unofficial | |
| 公告 | こうこく | public announcement; official notice | n3 |
| 公職 | こうしょく | public office | |
| 公開中 | こうかいちゅう | now available (e.g. for sale); now showing (e.g. film, exhibition) | |
| 公理 | こうり | axiom; maxim; self-evident truth | n2 |
| 公人 | こうじん | public character | |
| 公刊 | こうかん | publication | n3 |
| 公報 | こうほう | official bulletin; communique | n3 |
| 公示 | こうじ | public announcement; official notice; edict | n4 |
| 公定 | こうてい | official (rate, price, etc.); officially fixed | n2 |
| 公憤 | こうふん | public indignation; anger (as a citizen) | n2 |
| 公孫樹 | いちょう | ginkgo (Ginkgo biloba); gingko; maidenhair tree | n2 |
| 公営 | こうえい | public management | n1 |
| 公文書 | こうぶんしょ | official document; archives | |
| 公案 | こうあん | koan; kōan; Zen question for meditation (e.g. the sound of one hand clapping) | n1 |
| 初公開 | はつこうかい | debut; opening; first public exhibition | |
| 尊公 | そんこう | you; your father | |
| 公判廷 | こうはんてい | court; courtroom | |
| 非公開 | ひこうかい | private; non-public; secret; closed-door | |
| 公約 | こうやく | public commitment; public promise; campaign pledge; official vow | |
| 公設 | こうせつ | public (institution) | |
| 大公 | たいこう | archduke | n2 |
| 公休 | こうきゅう | legal holiday | n2 |
| 官公庁 | かんこうちょう | government and municipal offices; public agencies | n1 |
| 公文 | こうぶん | official document; archives | |
| 公安 | こうあん | public peace; public safety; public security; peace and order | n1 |
| 公娼 | こうしょう | licensed prostitute | n2 |
| 公証 | こうしょう | authentication; notarization; notarisation | n2 |
| 公金 | こうきん | public funds | |
| 太公望 | たいこうぼう | (avid) angler | |
| 公社 | こうしゃ | public corporation | n2 |
| 三公 | さんこう | three lords (highest ranking officials in the old Imperial Chinese or Japanese governments) | n3 |
| 公武 | こうぶ | nobles and soldiers; imperial court | |
| 公立大学 | こうりつだいがく | public university | |
| 公会 | こうかい | public meeting | n2 |
| 公算 | こうさん | probability; likelihood | n1 |
| 公徳 | こうとく | public morality; social morals; civic virtues | |
| 公主 | こうしゅ | princess | |
| 公司 | コンス | company (in China); firm | |
| 王公 | おうこう | royalty and nobility; noble; aristocrat | |
| 公民館 | こうみんかん | public hall; community center; community centre | |
| 公法 | こうほう | public law | n3 |
| 公吏 | こうり | local government official | n2 |
| 老公 | ろうこう | elderly nobleman | |
| 公費 | こうひ | public expense; public funds; public money; public expenditure | |
| 公称 | こうしょう | public announcement; official statement; official claim; nominal | n2 |