| Barnabás Steinmetz | |
| Nickname: | Börni, Séma, néger, Janikám |
| Nationality: | Hungarian |
| Birth Date: | 6 October 1975 |
| Birth Place: | Budapest, Hungary[1] |
| Position: | Guard |
| L/R: | Right |
| Currentclub: | Austria (head coach) Bp. Honvéd (assistant) |
| Youthclubs1: | KSI |
| Years1: | –1993 |
| Clubs1: | KSI |
| Years2: | 1993–1995 |
| Clubs2: | FTC-Vitasport |
| Years3: | 1995–1996 |
| Clubs3: | Szeged |
| Years4: | 1996–2000 |
| Clubs4: | FTC-Thomas Jeans |
| Years5: | 2000–2003 |
| Clubs5: | Posillipo |
| Years6: | 2003–2009 |
| Clubs6: | TEVA-VasasPlaket |
| Years7: | 2009–2010 |
| Clubs7: | Ferencváros |
| Years8: | 2010–2012 |
| Clubs8: | TEVA-Vasas-UNIQA |
| Years9: | 2012–2017 |
| Clubs9: | RacioNet Honvéd |
| Nationalyears1: | 1993–2006 |
| Coachyears1: | 2015– |
| Coachclubs1: | Austria |
| Coachyears2: | 2015– |
| Coachclubs2: | Austria junior (youth) |
| Coachyears3: | 2017– |
| Coachclubs3: | Bp. Honvéd (assistant) |
Barnabás Steinmetz (born 6 October 1975 in Budapest) is a Hungarian water polo player who played on the gold medal squads at the 2000 Summer Olympics[2] and 2004 Summer Olympics.[3] He is nicknamed Barney and Sema, and made his debut for the national team in 1993, at an international tournament in Moscow, Russia. He is currently the player of Vasas SC.[4]