| 2005–06 LEB 2 season | |
| League: | LEB 2 |
| Sport: | Basketball |
| No Of Teams: | 16 |
| No Of Games: | 240 (regular season) |
| Season Champs: | CB L'Hospitalet |
| Mvp: |  Thomas Terrell |
| Seasonslistnames: | LEB 2 |
| Prevseason Year: | 2003–04 |
| Nextseason Year: | 2005–06 |
The 2004–05 LEB 2 season was the 5th season of the LEB Plata, second league of the Liga Española de Baloncesto and third division in Spain.
16 teams play the regular season. This is a round robin, where each team will play twice against every rival. After the regular season, the eight first qualified teams played a playoff, were the two finalists promoted to LEB.
The last qualified team was relegated to Liga EBA, with the loser of the relegation playoffs, played by the 14th and the 15th qualified teams.
If two or more teams have got the same number of winning games, the criteria of tie-breaking are these:
| Teams | GP | W | L | PF | PA | PT | Qualification or relegation | |
|---|---|---|---|---|---|---|---|---|
| 1 | 30 | 24 | 6 | 2590 | 2290 | 54 | Promotion playoffs | |
| 2 | 30 | 21 | 9 | 2552 | 2341 | 51 | ||
| 3 | 30 | 21 | 9 | 2581 | 2309 | 51 | ||
| 4 | 30 | 20 | 10 | 2439 | 2229 | 50 | ||
| 5 | 30 | 20 | 10 | 2398 | 2208 | 50 | ||
| 6 | 30 | 20 | 10 | 2579 | 2401 | 50 | ||
| 7 | 30 | 19 | 11 | 2430 | 2392 | 49 | ||
| 8 | 30 | 15 | 15 | 2374 | 2432 | 45 | ||
| 9 | 30 | 14 | 16 | 2435 | 2448 | 44 | ||
| 10 | 30 | 13 | 17 | 2325 | 2365 | 43 | ||
| 11 | 30 | 13 | 17 | 2261 | 2305 | 43 | ||
| 12 | 30 | 12 | 18 | 2446 | 2601 | 42 | ||
| 13 | 30 | 11 | 19 | 2391 | 2426 | 41 | ||
| 14 | 30 | 9 | 21 | 2356 | 2534 | 39 | Relegation playoffs | |
| 15 | 30 | 7 | 23 | 2286 | 2530 | 37 | ||
| 16 | 30 | 1 | 29 | 2213 | 2845 | 31 | Relegation to Liga EBA | |
Thomas Terrell (CB L'Hospitalet)