| Hong Sung-woo | |
| Birth Date: | 20 February 1940 |
| Birth Place: | Anseong, Korea, Empire of Japan |
| Death Place: | Jeju City, South Korea |
| Nationality: | South Korean |
| Party: | DRP DJP |
| Office: | Member of the National Assembly of South Korea |
| Term Start: | 12 March 1979 |
| Term End: | 29 May 1988 |
| Predecessor: | Jeong Rae-hyuk |
| Successor: | |
Hong Sung-woo (Korean: 홍성우; 20 February 1940 – 2 December 2021) was a South Korean politician.[1] A member of the Democratic Justice Party, he served in the National Assembly from 1979 to 1988.[2]