| Gustav Långbacka | |
| Height: | 1.93 m |
| Birth Date: | 1984 5, df=yes |
| Birth Place: | Kokkola, Finland[1] |
| Position: | Goalkeeper |
| Years1: | 2005–2007 |
| Years2: | 2008 |
| Years3: | 2009–2011 |
| Years4: | 2010 |
| Clubs1: | GBK |
| Clubs2: | KPV |
| Clubs3: | IFK Mariehamn |
| Clubs4: | → SIFFK (loan) |
| Caps1: | 44 |
| Caps2: | 13 |
| Caps3: | 37 |
| Caps4: | 1 |
| Goals1: | 0 |
| Goals2: | 0 |
| Goals3: | 0 |
| Goals4: | 0 |
| Years5: | 2012–2015 |
| Clubs5: | Ilves |
| Caps5: | 38 |
| Goals5: | 0 |
| Years6: | 2014 |
| Clubs6: | → I-Kissat (loan) |
| Caps6: | 1 |
| Goals6: | 0 |
Gustav Långbacka (born 8 May 1984) is a Finnish football goalkeeper who played in the Veikkausliiga for IFK Mariehamn.
Långbacka's sister is the football referee Lina Lehtovaara.[2]