| Ryu Won-woo | |
| Fullname: | Ryu Won-woo |
| Birth Date: | 5 August 1990 |
| Birth Place: | Gwangju, South Korea |
| Currentclub: | Pohang Steelers |
| Clubnumber: | 91 |
| Position: | Goalkeeper |
| Youthclubs1: | Jeonnam Dragons |
| Years1: | 2009–2014 |
| Caps1: | 10 |
| Goals1: | 0 |
| Years2: | 2014 |
| Clubs2: | → Gwangju FC (loan) |
| Caps2: | 8 |
| Goals2: | 0 |
| Years3: | 2015–2017 |
| Caps3: | 101 |
| Goals3: | 0 |
| Years4: | 2018– |
| Caps4: | 15 |
| Goals4: | 0 |
| Years5: | 2020 |
| Clubs5: | → Paju Citizen (loan) |
| Caps5: | 2 |
| Goals5: | 0 |
| Years6: | 2021 |
| Clubs6: | → Siheung Citizen (loan) |
| Caps6: | 13 |
| Goals6: | 0 |
| Pcupdate: | 11 March 2022 |
Ryu Won-woo (; born 5 August 1990) is a South Korean footballer who plays as a goalkeeper for Pohang Steelers.