| 有口皆碑 | yǒu kǒu jiē bēi | every voice gives praise (idiom); with an extensive public reputation |
| 杜口 | dù kǒu | to remain silent |
| 杜口裹足 | dù kǒu guǒ zú | too frightened to move or speak |
| 松口蘑 | sōng kǒu mó | matsutake (Tricholoma matsutake), edible mushroom considered a great delicacy in Japan |
| 林口 | Lín kǒu | Linkou county in Mudanjiang 牡丹江, Heilongjiang; Linkou township in Taipei county 台北县, Taiwan |
| 林口县 | Lín kǒu xiàn | Linkou county in Mudanjiang 牡丹江, Heilongjiang |
| 林口乡 | Lín kǒu xiāng | Linkou township in Taipei county 台北县, Taiwan |
| 核出口控制 | hé chū kǒu kòng zhì | nuclear export control |
| 桶口 | tǒng kǒu | bunghole; see 桶孔 |
| 梅河口 | Méi hé kǒu | Meihekou county level city in Tonghua 通化, Jilin |
| 梅河口市 | Méi hé kǒu shì | Meihekou county level city in Tonghua 通化, Jilin |
| 楼梯口 | lóu tī kǒu | head of a flight of stairs |
| 档口 | dàng kǒu | stall; booth |
| 每端口价格 | měi duān kǒu jià gé | price per port |
| 毛口 | máo kǒu | metal filings (e.g. from a drill or lathe); burr |
| 水道口 | shuǐ dào kǒu | mouth of sewer |
| 江口 | Jiāng kǒu | Jiangkou county in Tongren prefecture 铜仁地区, Guizhou |
| 江口县 | Jiāng kǒu xiàn | Jiangkou county in Tongren prefecture 铜仁地区, Guizhou |
| 没口 | méi kǒu | unreservedly; profusely |
| 沙井口 | shā jǐng kǒu | manhole |
| 沙河口区 | Shā hé kǒu qū | Shahekou district of Dalian 大连市, Liaoning |
| 河口区 | Hé kǒu qū | Hekou district of Dongying city 东营市, Shandong |
| 河口瑶族自治县 | Hé kǒu Yáo zú zì zhì xiàn | Hekou Yaozu autonomous county in Honghe Hani and Yi autonomous prefecture 红河哈尼族彝族自治州, Yunnan |
| 泡泡口香糖 | pào pào kǒu xiāng táng | bubble-gum |
| 洞口县 | Dòng kǒu xiàn | Dongkou county in Shaoyang 邵阳, Hunan |
| 流动人口 | liú dòng rén kǒu | transient population; floating population |
| 浦口区 | Pǔ kǒu qū | Pukou district of Nanjing City 南京市 in Jiangsu 江苏 |
| 海口市 | Hǎi kǒu Shì | Haikou prefecture-level city and capital of Hainan Province 海南省 |
| 淌口水 | tǎng kǒu shuǐ | to let saliva dribble from the mouth; to slobber |
| 港口区 | Gǎng kǒu qū | Gangkou district of Fangchenggang city 防城港市, Guangxi |
| 港口城市 | gǎng kǒu chéng shì | port city |
| 湖口县 | Hú kǒu xiàn | Hukou county in Jiujiang 九江, Jiangxi |
| 湖口乡 | Hú kǒu xiāng | Hukou township in Hsinchu county 新竹县, northwest Taiwan |
| 溪口 | Xī kǒu | Xikou or Hsikou township in Chiayi county 嘉义县, west Taiwan |
| 溪口乡 | Xī kǒu xiāng | Xikou or Hsikou township in Chiayi county 嘉义县, west Taiwan |
| 满口之乎者也 | mǎn kǒu zhī hū zhě yě | mouth full of literary phrases; to spout the classics |
| 满口应承 | mǎn kǒu yìng chéng | to promise readily |
| 满口称赞 | mǎn kǒu chēng zàn | to praise profusely |
| 满口胡柴 | mǎn kǒu hú chái | to spout nonsense; to bullshit endlessly |
| 满口胡言 | mǎn kǒu hú yán | to spout nonsense; to bullshit endlessly |
| 满口谎言 | mǎn kǒu huǎng yán | to pour out lies |
| 满口脏话 | mǎn kǒu zāng huà | to pour out obscenities; filthy mouthed |
| 火山口 | huǒ shān kǒu | volcanic crater |
| 营口市 | Yíng kǒu shì | Yingkou prefecture level city in Liaoning province 辽宁省 in northeast China |
| 用户到网络接口 | yòng hù dào wǎng luò jiē kǒu | user-network interface; UNI |
| 用户到网络的接口 | yòng hù dào wǎng luò de jiē kǒu | User-Network Interface; UNI |
| 病从口入 | bìng cóng kǒu rù | Illness enters by the mouth (idiom). Mind what you eat!; fig. A loose tongue may cause a lot of trouble. |
病从口入，
祸从口出 | bìng cóng kǒu rù ,
huò cóng kǒu chū | Illness enters by the mouth, trouble comes out by the mouth (idiom). A loose tongue may cause a lot of trouble. |
| 登机入口 | dēng jī rù kǒu | boarding gate |
| 登机口 | dēng jī kǒu | departure gate (aviation) |
