| Competition: | Segunda Divisão de Honra |
| Season: | 1999–2000 |
| Winners: | FC Paços de Ferreira |
| Promoted: | FC Paços de Ferreira SC Beira-Mar CD Aves |
| Relegated: | Moreirense FC AD Esposende SC Covilhã |
| Prevseason: | 1998–99 |
| Nextseason: | 2000–01 |
The 1999–2000 Segunda Divisão de Honra season was the tenth season of the competition and the 66th season of recognised second-tier football in Portugal.[1]
The league was contested by 18 teams with FC Paços de Ferreira winning the championship and gaining promotion to the Primeira Liga along with SC Beira-Mar and CD Aves. At the other end of the table Moreirense FC, AD Esposende and SC Covilhã were relegated to the Segunda Divisão.[1]