| Ján Šlahor | |
| Fullname: | Ján Šlahor |
| Birth Date: | 16 May 1977 |
| Currentclub: | SV Ratzersdorf |
| Years2: | 2001–2004 |
| Caps2: | 102 |
| Goals2: | 19 |
| Years3: | 2001–2002 |
| Clubs3: | →Prešov (loan) |
| Caps3: | 34 |
| Goals3: | 7 |
| Years4: | 2004 |
| Clubs4: | Lisma-Mordovia Saransk |
| Caps4: | 18 |
| Goals4: | 1 |
| Years5: | 2005 |
| Clubs5: | Vrbové |
| Years6: | 2005 |
| Clubs6: | Lučenec |
| Years7: | 2006–2007 |
| Clubs7: | Inter Bratislava |
| Years8: | 2008 |
| Clubs8: | Senec |
| Caps8: | 9 |
| Goals8: | 0 |
| Years9: | 2008 |
| Clubs9: | UFC Purbach |
| Years10: | 2009–2010 |
| Clubs10: | SV Leithaprodersdorf |
| Years11: | 2011 |
| Years12: | 2012– |
| Clubs12: | SV Ratzersdorf |
| Nationalyears1: | 2000 |
| Nationalteam1: | Slovakia Olympic |
| Nationalcaps1: | ? |
| Nationalgoals1: | 1 |
| Pcupdate: | 23 March 2012 |
| Ntupdate: | 23 March 2012 |
Ján Šlahor (born 16 May 1977) is a professional Slovak footballer that currently plays for Slovak club SV Ratzersdorf. He is an attacker and he wears number 11.
He represented the Slovakia national football team in the 2000 Summer Olympics in Sydney.