- 东南亚 dōngnányà Southeast Asiathe southeastern region of Asia, including countries such as Vietnam, Thailand, Malaysia, Singapore, and Indonesia
- 东南部 dōngnánbù southeastthe southeastern part of a region or country
- 东南大学 dōngnándàxué Southeast UniversitySoutheast University, a prominent university located in Nanjing, China
- 东南西北 dōngnánxīběi east, south, west and north; all directionsthe four cardinal directions; everywhere; in all directions
- 黔东南 qiándōngnán QiandongnanQiandongnan Miao and Dong Autonomous Prefecture in Guizhou Province [[贵州省|貴州省|gui4 zhou1 sheng3]]
- 黔东南州 qiándōngnánzhōu QiandongnanQiandongnan Miao and Dong Autonomous Prefecture, in Guizhou Province [[贵州省|貴州省|gui4 zhou1 sheng3]]
- 东南方 dōngnánfāng southeastThe direction or location between east and south
- 黔东南苗族侗族自治州 qiándōngnánmiáozúdòngzúzìzhìzhōu Qiandongnan Miao and Dong Autonomous PrefectureQiandongnan Miao and Dong Autonomous Prefecture, in [[贵州|貴州|gui4 zhou1]] province
- 东南亚国家联盟 dōngnányàguójiāliánméng ASEANAssociation of Southeast Asian Nations; an international political and economic organization established in 1967.
- 东南风 dōngnánfēng southeast winda wind blowing from the southeast; a southeaster
- 东南西北中 dōngnánxīběizhōng the five directionsThe five directions: east, south, west, north, and middle.
- 东南亚国家协会 dōngnányàguójiāxiéhuì ASEANAssociation of Southeast Asian Nations, an intergovernmental organization comprising ten Southeast Asian countries
- 东南亚国协 dōngnányàguóxié ASEAN(Taiwan usage) Association of Southeast Asian Nations; a regional international organization for political and economic cooperation
- 孔雀東南飛 kǒngquèdōngnánfēi The Peacocks Fly Southeasta famous narrative poem from the late Eastern Han dynasty telling the tragic story of a couple who committed suicide after being forced apart by their families
- 孔雀东南飞 kǒngquèdōngnánfēi The Peacock Flies Southeasta famous long narrative poem from the Han dynasty, later collected in the New Songs from a Jade Terrace anthology, which tells the tragedy of a young couple forced to separate and commit suicide