| Competition: | Liga de Honra |
| Season: | 2005–06 |
| Winners: | SC Beira-Mar |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 Liga de Honra season was the 16th season of the competition and the 72nd season of recognised second-tier football in Portugal.
The league was contested by 18 teams with SC Beira-Mar winning the championship and gaining promotion to the Primeira Liga along with CD Aves. At the other end of the table Moreirense FC, SC Covilhã, FC Barreirense, FC Marco, AD Ovarense and FC Maia were relegated to the Segunda Divisão.