| Kostas Triantafyllou | |
| Fullname: | Konstantinos Triantafyllou |
| Height: | 1.77 m |
| Birth Date: | 1991 4, df=yes |
| Birth Place: | Ptolemaida, Greece |
| Position: | Midfielder |
| Currentclub: | Pythagoras Kala Dendra |
| Years1: | 2010–2013 |
| Clubs1: | Panserraikos |
| Years2: | 2013–2014 |
| Clubs2: | Panthrakikos |
| Years3: | 2014–2015 |
| Clubs3: | Panserraikos |
| Years4: | 2015 |
| Clubs4: | Ethnikos Gazoros |
| Years5: | 2016–2019 |
| Clubs5: | Apollon Paralimnio |
| Years6: | 2019–2021 |
| Clubs6: | Panserraikos |
| Years7: | 2021–2022 |
| Clubs7: | Serres 1800 |
| Years8: | 2022– |
| Clubs8: | Pythagoras Kala Dendra |
| Nationalyears1: | 2011–2012 |
| Nationalteam1: | Greece U21 |
| Nationalcaps1: | 4 |
| Nationalgoals1: | 0 |
| Caps7: | 13 |
| Goals7: | 1 |
| Caps8: | 26 |
| Goals8: | 4 |
Kostas Triantafyllou (Greek, Modern (1453-);: Κώστας Τριανταφύλλου; born 2 April 1991) is a Greek footballer who plays as a midfielder for Serres FCA club Pythagoras Kala Dendra.[1]