- 同盟军 tóngméngjūn allied forcesmilitary forces or armies that have joined together in an alliance
- 同盟会 Tóngménghuì TongmenghuiTongmenghui, Sun Yat-sen's alliance for democracy, founded 1905, became the Guomindang in 1912
- 同盟国 tóngméngguó allyan allied nation or a country that is a member of a formal alliance
- 中国同盟会 Zhōngguó Tóngménghuì TongmenghuiSun Yat-sen's revolutionary alliance for democracy, founded in 1905, which became the Kuomintang (KMT) in 1912.
- 台湾民主自治同盟 Táiwān Mínzhǔ Zìzhì Tóngméng Taiwanese leagueTaiwan Democratic Self-Government League
- 关税同盟 guānshuìtóngméng customs union
- 中国民主同盟 Zhōngguó Mínzhǔ Tóngméng China Democratic League
- 汉萨同盟 Hànsàtóngméng Hanseatic League