| Park Maeng-woo | |
| Native Name Lang: | ko |
| Office: | Secretary General of the Liberty Korea Party |
| Term Start: | 11 May 2017 |
| Term End: | 5 June 2017 |
| Birth Place: | Ulsan, South Korea |
| Citizenship: | South Korean |
| Party: | People Power |
| Children: | 2 |
| Branch: | Army |
| Rank: | Lance corporal |
| Office1: | Mayor of Ulsan |
| Term Start1: | 1 July 2002 |
| Term End1: | 30 June 2014 |
| Predecessor1: | Shim Wan-koo |
| Successor1: | Kim Gi-hyeon |
| Korean name | |
| Hangul: | 박맹우 |
| Rr: | Bak Maeng-u |
| Mr: | Pak Maengu |
Park Maeng-woo (; born December 6, 1951) is a South Korean politician who formerly served as Mayor of Ulsan from 2002 to 2014.