| 保加利亚 | Bǎo jiā lì yà | Bulgaria |  |
| 索非亚 | Suǒ fēi yà | Sofia, capital of Bulgaria | |
| 普罗夫迪夫 | Pǔ luó fū dí fū | Plovdiv, city in Bulgaria | |
| 保加利亚共和国 | bǎo jiā lì yà gòng hé guó | the Republic of Bulgaria | |
| 华沙条约 | huá shā tiáo yuē | Treaty of Friendship, Cooperation and Mutual Assistance between the People's Republic of Albania, the People's Republic of Bulgaria, the Hungarian People's Republic, the German Democratic Republic, the Polish People's Republic, the Romanian People's Repub | |
| 华沙友好合作互助条约 | | Treaty of Friendship, Cooperation and Mutual Assistance between the People's Republic of Albania, the People's Republic of Bulgaria, the Hungarian People's Republic, the German Democratic Republic, the Polish People's Republic, the Romanian People's Repub | |
| 关于格鲁吉亚与保加利亚发展关系的宣言 | | Declaration on the Development of Relations between Georgia and Bulgaria | |
