The Greek Basket League (GBL) Best Defender, or Greek Basket League Defensive Player of the Year, is an annual award for the best defensive player of each season of Greece's top-tier level professional basketball club league, the Greek Basket League.
| Season | Best Defender | Club | Ref. | |
|---|---|---|---|---|
| Dimitris Diamantidis (2×) | ||||
 Josh Childress | ||||
| Dimitris Diamantidis (3×) | ||||
 Stéphane Lasme (2×) | ||||
| / Nick Calathes (2×) | ||||
| Kostas Papanikolaou | Olympiacos | |||
| / Nick Calathes (3×) | ||||
 Howard Sant-Roos (2×) | ||||
| / Thomas Walkup (2×) | ||||
Notes:
There was no awarding in the 2019–20, due to the coronavirus pandemic in Europe.