| Diamantis Slaftsakis Διαμαντής Σλαφτσάκης | |
| Position: | Power forward / small forward |
| Height Ft: | 6 |
| Height In: | 7.5 |
| Weight Lbs: | 195 |
| League: | Greek Basket League BCL |
| Team: | Kolossos Rodou |
| Birth Date: | July 27, 1994 |
| Birth Place: | Panorama, Thessaloniki, Greece |
| Career Start: | 2012 |
| Years1: | 2012–2015 |
| Team1: | KAOD |
| Years2: | 2015–2016 |
| Team2: | Koroivos Amaliadas |
| Years3: | 2016–2017 |
| Team3: | Apollon Patras |
| Years4: | 2017–2018 |
| Team4: | Trikala |
| Years5: | 2018–2021 |
| Team5: | Aris |
| Years6: | 2021–2022 |
| Team6: | Kolossos Rodou |
| Years7: | 2022–2023 |
| Team7: | PAOK |
| Years8: | 2023–2024 |
| Team8: | Aris |
| Years9: | 2024–present |
| Team9: | Kolossos Rodou |
Diamantis Slaftsakis (Greek: Διαμαντής Σλαφτσάκης; born July 27, 1994) is a Greek professional basketball player for Kolossos Rodou of the Greek Basket League and the Basketball Champions League (BCL). He is 2.02 m (6 ft 7 in) tall.[1] He can play at both the small forward and power forward positions.
Slaftsakis played youth basketball with Halkidona and Mantoulidis, before he started his pro career.
Slaftsakis began his professional career with the Greek League club KAOD,[2] during the 2012–13 season. He left KAOD, when the club was relegated down from the first-tier Greek Basket League, due to financial problems, in 2015. He then joined Koroivos Amaliadas.
On July 21, 2016, Slaftsakis signed with Apollon Patras.[3] He then joined Trikala Aries, where he became the team's captain.
On July 29, 2018, he joined Aris of the Greek Basket League, where he spent three consecutive seasons.[4]
On July 5, 2021, Slaftsakis signed with Kolossos Rodou. In 25 games, he averaged 3.1 points and 2 rebounds in 11 minutes per contest.
On August 10, 2022, Slaftsakis moved back to Thessaloniki for PAOK. In 28 league games, he averaged 2.3 points and 1.4 rebounds in 8 minutes per contest.
On July 13, 2023, Slaftsakis returned to Aris after two seasons.
Slaftsakis was a member of the junior national teams of Greece. He played at the 2010 FIBA Europe Under-16 Championship, the 2012 FIBA Europe Under-18 Championship, the 2013 FIBA Europe Under-20 Championship, and the 2014 FIBA Europe Under-20 Championship with the junior national teams of Greece.