| English | Japanese |
| n a third country | 第三国 news1 nf14 |
| n a third force | 第三勢力 news2 nf37 |
| n a third part | 三分の一 |
| n advance payment on behalf of a third party | 立替払い (with expectation that it will be reimbursed, たてかえばらい) |
| n advance payment on behalf of a third party | 立替え払い (with expectation that it will be reimbursed) |
| n advance payment on behalf of a third party | 立替払 (with expectation that it will be reimbursed) |
| n athlete competing in the middle-number match in a team competition, i.e. second in 3-on-3, third in 5-on-5 | 中堅 ichi1 news1 nf04 (kendo, judo, etc.) |
| n binding legal effectiveness as to third parties | 対世効 |
| n climate of the third month of the lunar calendar in Okinawa | うりずん (end of the dry season) |
| n dark sweet liquid produced after the third heating in a thermal sugar-refining process | 三温糖 |
| n every third | 二つ置き |
| n final third of a two-hour period | 下刻 |
| first, second and third | 松竹梅 news2 nf47 (class) |
| n first, second, third and fourth | 甲乙丙丁 |
| n first third of a two-hour period | 上刻 |
| n first-second-third | 上中下 (class) |
| n forced out on third | 三封 |
| n Heian-period ceremony where a newlywed groom and bride eat a rice-cake on the third night after the wedding ceremony | 三日の餠 oK |
| n Heian-period ceremony where a newlywed groom and bride eat a rice-cake on the third night after the wedding ceremony | 三日夜の餠 oK |
| n Heian-period ceremony where a newlywed groom and bride eat a rice-cake on the third night after the wedding ceremony | 三日夜の餅 |
| n Heian-period ceremony where a newlywed groom and bride eat a rice-cake on the third night after the wedding ceremony | 愛敬の餅 |
| n Heian-period ceremony where a newlywed groom and bride eat a rice-cake on the third night after the wedding ceremony | 三日の餅 |
| n kinsman of the third degree | 三親等 (of consanguinity) |
| n last day of the third lunar month | 三月尽 (marking the end of spring) |
| n last day of the third month of the lunar calendar | 弥生尽 |
| n-adv n-t last third of a month | 下旬 ichi1 news1 nf05 (げぢゅん) |
| middle third | 中央三分点 (ちゅうおうさんぶんてん) |
| n middle third of a two-hour period | 中刻 |
| n national of a third country | 第三国人 |
| n national of a third country | 三国人 |
| n vs adj-no no third party | 相対 news1 nf14 |
| non-third-singular rule | 非三人称単数規則 |
| n one third | 三分の一 |
| one-third atmosphere percentage | １/3気圧水分 |
| one third maximum wave | 1/3最大波 |
| one third maximum wave | １／３最大波 |
| one third octave band analyzer | 1/3オクターブバンド分析器 |
| n out on a third-base liner | 三直 |
| n uk postcards with the bottom third of the front side reserved for an advertisement, and sold at a lower cost than regular postcards | エコー葉書 |
| n second grade of the third rank of honor | 従三位 (honour) |
| n-adv n-t second third of a month | 中旬 ichi1 news1 nf05 (ちゅうぢゅん) |
| n senior grade of the third court rank | 正三位 |
| n steward in charge of the affairs of nobles of the third rank and higher | 家司 (from the middle of the Heian period) |
| n the third | 第３ |
| n the third ... | 第三次 |
| n the third | 第三 |
| n the third day of the month | ３日 |
| n the third day of the month | 三日 ichi1 |
| n the third estate | 第三階級 |
| the third law of thermodynamics | 熱力学の第三法則 |
| n the Third Reich | 第三帝国 |
| n the Third World | 第三世界 |
| n third and final proof | 三校終了 |
| third angle projection method | 第三角法 (だいさんかくほう) |
| third-angle system | 第三角法製図、 せいず (だいさんかくほう) |
| n Third Arab-Israeli War | 六日間戦争 (June 5-10, 1967) |
| n Third Arab-Israeli War | 第三次中東戦争 (June 5-10, 1967) |
| n Third Arab-Israeli War (June 5-10, 第３次中東戦争 | 第３次中東戦争 |
| n third base | 終止形 |
| n third base | サード・ベイス・ |
| n third base | サード・ベース |
| n third base | サードベイス |
| n third base | サードベース |
| n third class | 三等 |
| n third class | ３等 news2 nf25 |
| n third-class | 丙種 |
| adj-no n third-class | 三流 ichi1 news2 nf26 |
| adj-na third class | 三級 |
| n item sent by third-class mail | 第三種郵便物 |
| n item sent by third-class mail | 第３種郵便物 |
| n third-class mail matter | 第三種郵便物 |
| n third-class mail matter | 第３種郵便物 |
| n third-class ticket | 赤切符 |
| exp third climate of spring | うお氷に上る (when the ice breaks and fish start appearing near the surface) |
| exp third climate of spring | 魚氷に上る (when the ice breaks and fish start appearing near the surface) |
| n third cockcrowing | 三番鳥 |
| n third cockcrowing | 三番鶏 |
| n third compartment of the stomach in ruminants | 葉胃 |
| n uk third cousin | 三従兄弟 |
| n third daughter | 三女 news1 nf19 |
| n vs adj-no third degree | 拷問 news1 nf17 |
| third degree | 角 ichi1 (of the Japanese & Chinese pentatonic scale, kaku) |
| n third degree burn | 第三度熱傷 |
| n third degree of kinship | ３等親 |
| n third degree of kinship | 三等親 |
| obsc sl third degree poverty | ビンベスト |
| n Third Epistle of John | ヨハネの手紙三 (book of the Bible) |
| n third floor | 三階 |
| third generation | 三代 news1 nf17 |
| third generation | 第三世代 |
| third generation | 三世 (immigrant, monarch, etc.) |
| third generation model | 第三世代モデル |
| adj-na third grade | 三級 |
| n third guest of honour | 末客 (honor) |
| n third in a sequence denoted by the iroha system | ハ |
| n third in rank | 丙 news2 nf39 spec2 |
| third instar | 三齢 |
| n Third International | 第３インターナショナル |
| n Third International | 第三インターナショナル |
| third intracellular | 第三細胞内 |
| n third law of thermodynamics | 熱力学の第３法則 |
| n third law of thermodynamics | 熱力学の第三法則 |
| third levee | 三番堤 |
| n third lunar month | 早花咲月 |
| n third lunar month | 嘉月 |
| n third lunar month | 桜月 |
| n third lunar month | 花見月 |
| n obsc third lunar month | 夢見月 |
| third lunar month | 姑洗 |
| n third magnitude star | ３等星 |
| n third magnitude star | 三等星 |
| n third mate | 三等航海士 (さんとう・こうかいし) |
| n third note in the diatonic scale | ハ (used in key names, etc.) |
| n third of nine traditional astrological signs | 三碧 (corresponding to Jupiter and east) |
| n third of the sexagenary cycle | 丙寅 |
| n third officer | 三等航海士 (さんとう・こうかいし) |
| third order grid unit | 基準地域メッシュ |
| third order plotting instrument | 三級図化機 |
| n third party | サード・パーティー |
| n third party | サード・パーティ |
| n third party | サードパーティ |
| n third party | 第三政党 |
| n third party | サードパーティー |
| n third party | 第三者 news1 nf07 |
| n third-party allocation of shares | 第三者割当増資 (だいさんしゃわりあてぞうし) |
| third party claims | 第三者の補償要求 |
| n third-party evaluation | 外部評価 |
| third party insurance | 第三者保険 (だいさんしゃ・ほけん) |
| third party mortgagor | 物上保証人 |
| n third-party panel | 第三者委員会 |
| third party risk | 第三者のリスク |
| third person | 傍 (そば) |
| third person | 端 (はした) |
| n third person | 第三者 news1 nf07 |
| third person | 側 ichi1 news1 nf03 (がわ) |
| n third prize | ３等賞 |
| n third prize | 三等賞 |
| n third proof | 三校 news2 nf25 |
| n adj-no third rank | 三位 (in the Japanese court system) |
| n third rank in the game of go | 囲碁三級 |
| adj-no n third-rate | 三流 ichi1 news2 nf26 |
| n yoji third-rate actor | 三文役者 |
| third sector | 第３セクター |
| n third sector | 第三セクター |
| n third sign of Chinese zodiac | 寅 news1 nf14 (The Tiger, 3am-5am, east-northeast, January) |
| n third sign of the Chinese calendar | 丙 news2 nf39 spec2 |
| n third son | 三郎 ({uk} Occella iburia ***b (species of poacher)) |
| third son | 三男 news1 nf12 |
| third stage | 第三期 |
| n third string | 三の糸 (of a shamisen, etc.) |
| n third-term election | 三選 news1 nf15 |
| exp third time lucky | 三度目の正直 |
| exp third time's the charm | 三度目の正直 |
| n third toe | 中指 ichi1 news2 nf33 |
| n third train to depart | 次次発 (from now) |
| n third train to depart | 次々発 (from now) |
| n adj-no third trimester | 後期 ichi1 news1 nf06 (kōki) |
| third volume | 下 (of three) |
| n third watch of the night | 三更 (approx. 11 pm to 1 am) |
| n third wheel | お邪魔虫 |
| n third wheel | 御邪魔虫 |
| n third wheel | 余計者 (よけいもの) |
| n sens third world country | 低開発国 (ていかいはつこく) |
| n sens third world country | 後進国 news2 nf37 (こうしんこく) |
| n Third World War | 第３次世界大戦 |
| n Third World War | 第三次世界大戦 |
| n third-year high-school student | 高３ |
| n third-year high-school student | 高三 |
| n third year of high school | 高３ |
| n third year of high school | 高三 |
| n third year college student | ３回生 |
| n third-year student | 三年生 |
| n third year college student | 三回生 |
| n thirty-third of the sexagenary cycle | 丙申 |
| n three-part joke, where the first two parts are similar and mundane, while the third is the punchline | 三段オチ (e.g. How do you get to my place? Go down to the corner, turn left, and get lost.) |
| n three-part joke, where the first two parts are similar and mundane, while the third is the punchline | 三段落ち (e.g. How do you get to my place? Go down to the corner, turn left, and get lost.) |
| n twenty-third day of the month | ２３日 |
| n twenty-third day of the month | 二十三日 |
| n twenty-third of the sexagenary cycle | 丙戌 |
| n two thirds | 三分の二 |
| exp while two dogs are fighting for a bone, a third runs away with it | 鷸蚌の争い |
| n winning hand that contains two pungs or kongs of dragons and a pair of the third dragon | 小三元 |