| Aleš Mejač | |
| Fullname: | Aleš Mejač |
| Birth Date: | 1983 3, df=y |
| Birth Place: | Kranj, SFR Yugoslavia |
| Position: | Defender |
| Youthyears1: | –2001 |
| Youthclubs1: | Triglav Kranj |
| Years1: | 2001–2002 |
| Years2: | 2002 |
| Years3: | 2002–2003 |
| Years4: | 2003–2005 |
| Years5: | 2005–2006 |
| Years6: | 2006–2008 |
| Years7: | 2008–2017 |
| Years8: | 2016 |
| Clubs1: | Triglav Kranj |
| Clubs2: | Portorož Piran |
| Clubs3: | Koper |
| Clubs4: | Mura |
| Clubs5: | Bela Krajina |
| Clubs6: | Koper |
| Clubs7: | Maribor |
| Clubs8: | → Rijeka (loan) |
| Caps1: | 16 |
| Caps2: | 1 |
| Caps3: | 16 |
| Caps4: | 48 |
| Caps5: | 12 |
| Caps6: | 50 |
| Caps7: | 136 |
| Caps8: | 2 |
| Goals1: | 2 |
| Goals2: | 0 |
| Goals3: | 0 |
| Goals4: | 4 |
| Goals5: | 7 |
| Goals6: | 4 |
| Goals7: | 1 |
| Goals8: | 0 |
| Totalcaps: | 281 |
| Totalgoals: | 18 |
| Nationalyears1: | 2000–2001 |
| Nationalteam1: | Slovenia U17 |
| Nationalcaps1: | 5 |
| Nationalgoals1: | 3 |
| Nationalyears2: | 2001 |
| Nationalteam2: | Slovenia U18 |
| Nationalcaps2: | 10 |
| Nationalgoals2: | 1 |
| Nationalyears3: | 2001 |
| Nationalteam3: | Slovenia U19 |
| Nationalcaps3: | 1 |
| Nationalgoals3: | 0 |
| Nationalyears4: | 2002–2003 |
| Nationalteam4: | Slovenia U20 |
| Nationalcaps4: | 6 |
| Nationalgoals4: | 1 |
| Nationalyears5: | 2002–2004 |
| Nationalteam5: | Slovenia U21 |
| Nationalcaps5: | 12 |
| Nationalgoals5: | 3 |
| Nationalyears6: | 2008–2009 |
| Nationalteam6: | Slovenia |
| Nationalcaps6: | 5 |
| Nationalgoals6: | 0 |
Aleš Mejač (born 18 March 1983) is a Slovenian retired footballer who played as a defender.