| Konstantinos Karagiannis | |
| Birth Date: | 2 April 2000 |
| Birth Place: | Nicosia, Cyprus |
| Height: | 1.76 m |
| Position: | Left-back |
| Youthclubs1: | APOEL |
| Years1: | 2019–2020 |
| Clubs1: | APOEL |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2019–2020 |
| Clubs2: | → Alki Oroklini (loan) |
| Years3: | 2020–2022 |
| Clubs3: | Olympiakos Nicosia |
| Caps3: | 1 |
| Goals3: | 0 |
| Years4: | 2020–2021 |
| Clubs4: | → PAEEK (loan) |
| Years5: | 2022–2023 |
| Clubs5: | Akritas Chlorakas |
| Caps5: | 31 |
| Goals5: | 0 |
| Years6: | 2023–2024 |
| Clubs6: | Volos |
| Caps6: | 2 |
| Goals6: | 0 |
| Nationalyears1: | 2016–2017 |
| Nationalteam1: | Cyprus U17 |
| Nationalcaps1: | 11 |
| Nationalgoals1: | 1 |
| Nationalyears2: | 2018–2019 |
| Nationalteam2: | Cyprus U19 |
| Nationalcaps2: | 7 |
| Nationalgoals2: | 0 |
| Pcupdate: | 21 May 2024 |
| Ntupdate: | 10 January 2019 |
Konstantinos Karagiannis (el|Κωνσταντίνος Καραγιάννης; born 2 April 2000) is a Cypriot professional footballer who plays as a left-back.