Dong-soo
{{Infobox Korean name
|hangul = 동수
|hanja = {{linktext|東|脩}}, {{linktext|東|洙}}, {{linktext|東|秀}}, and others
|rr = Dong-su
|mr = Tongsu
}}
Dong-soo is a Korean masculine given name. Its meaning depends on the hanja used to write each syllable of the name. There are 24 hanja with the reading "dong" and 67 hanja with the reading "soo" on the South Korean government's official list of hanja which may be registered for use in given names.{{cite web|url=http://help.scourt.go.kr/nm/img/hanja/hanja.pdf|title=인명용 한자표|trans-title=Table of hanja for use in personal names|publisher=Supreme Court of the Republic of Korea|publication-place=Seoul|accessdate=16 August 2016}}
People with this name include:
- Baek Dong-soo (1743–1816), Joseon Dynasty swordsman and martial artist
- Choi Dong-soo (baseball) (born 1971), South Korean baseball coach
- Choi Dong-soo (footballer) (born 1985), South Korean football player
- Kim Dong-soo (baseball) (born 1968), South Korean baseball manager
- Kim Dong-soo (canoeist) (born 1969), South Korean canoeist
- Garimto (born Kim Dong-soo, 1981), South Korean former professional StarCraft player
- Lee Dong-soo (born 1974), South Korean badminton player
- Lee Dong-soo (footballer) (born 1994), South Korean football player