| Balázs Erdélyi | |
| Nickname: | Bazsi |
| Nationality: | Hungarian |
| Birth Date: | 16 February 1990 |
| Birth Place: | Eger, Hungary |
| Height: | 1.96 m |
| Weight: | 94 kg |
| Position: | Wing |
| L/R: | Right |
| Currentclub: | Savona |
| Youthclubs1: | Eger |
| Years1: | –2010 |
| Clubs1: | Eger |
| Years2: | 2010–2014 |
| Clubs2: | Pacific Tigers |
| Years3: | 2014–2017 |
| Clubs3: | Eger |
| Years4: | 2017–2021 |
| Clubs4: | OSC-Újbuda |
| Years5: | 2021–2023 |
| Clubs5: | Vasas |
| Years6: | 2023–present |
| Clubs6: | Savona |
| Nationalyears1: | 2015– |
| Nationalteam1: | Hungary |
| Show-Medals: | yes |
| Updated: | 2 August 2023 |
Balázs Erdélyi (born 16 February 1990) is a water polo player from Hungary. He was part of the Hungarian team at the 2016 Summer Olympics,[1] where the team was eliminated in the quarterfinals.
Erdélyi played college water polo at the University of the Pacific, where he won back-to-back Cutino Awards (best player in college water polo) and helped Pacific establish itself as a top-tier program.[2]