2012–13 Segunda Liga
The 2012–13 Segunda Liga was the 23rd season of the second-tier of football in Portugal. This season marked a series of changes in the league overall. The league's name was changed back to Segunda Liga from the previous Liga de Honra. A total of 22 teams contested the league, up from 16 in the previous season; 14 of which contested the 2011–12 season, two of which were promoted from the Portuguese Second Division, one of which was relegated from the 2011–12 Primeira Liga, and five of which were new reserve teams of Primeira Liga clubs. The reserve teams were not eligible for promotion to the Primeira Liga.
Events
were relegated to the second division due to not fulfilling the mandatory requirements by the Portuguese League for Professional Football regarding the application process to professional competitions. Thus, Sporting Covilhã was invited to stay in the Segunda Liga despite being relegated in the previous season.Varzim, the 2011–12 Segunda Divisão champions, also did not fulfill the requirements and were not registered in the Segunda Liga. Again, Portimonense were invited to remain in the Segunda Liga.
Teams
Changes in 2012–13
Teams relegated from 2011–12 Primeira Liga- 15th Place: Feirense
- Champions: Estoril
- Runners-up: Moreirense
- Runners-up: Tondela
- 12th place : Marítimo B
- Benfica B
- Braga B
- Porto B
- Sporting CP B
- Vitória de Guimarães B
Stadia and locations
Personnel and kits
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players and Managers may hold more than one non-FIFA nationality.| Team | Head coach | Captain | Kit manufacturer | Shirt sponsor |
| Arouca |  Vítor Oliveira | Gabi | Joma | Cavadinha |
| Atlético | Toni Pereira | Joma | Hyundai / Banif / Betclic | |
| Belenenses |  Mitchell van der Gaag | Duarte Machado | Adidas | MetLife |
| Benfica B | Luís Norton de Matos | Miguel Rosa | adidas | meo / tmn |
| Braga B | Toni | Mário Palmeira | Macron | AXA |
| Desportivo das Aves | Professor Neca | Leandro | Lacatoni | |
| Feirense | Quim Machado |  Luciano | Adidas | ASLO / VITO / U-BOX |
| Freamunde | João Eusébio | Bock | Joma | Capão À Freamunde |
| Leixões | Pedro Correia | Nuno Silva | SportZone | BetClic / Soltráfego / SmileUp |
| Marítimo B | Ivo Vieira | Romeu Ribeiro | Lacatoni | Banif |
| Naval | Filó | Desportreino | Algarve Sol Hoteis / BetClic / Polar Viagens | |
| Oliveirense | João de Deus | Laranjeira | Macron | BetClic / Caçarola / Grupo Simoldes |
| Penafiel | Miguel Leal | Hélder Ferreira | Desportreino | Sentir Penafiel |
| Portimonense |  Lázaro Oliveira | Macron | Visit Portimão | |
| Porto B | Rui Gomes | Tiago Ferreira | Nike | meo / tmn |
| Santa Clara | Luís Miguel |  Pedro Pacheco | Lacatoni | Açoreana Seguros |
| Sporting B | José Dominguez | Pedro Mendes | Puma | tmn / meo |
| Sporting Covilhã | Fanã | Edgar | Desportreino | Natura IMB Hotels |
| Tondela | Vítor Paneira | Márcio Sousa | Macron | Centro Litoral, OP |
| Trofense | Micael Sequeira | Tiago | Lacatoni | Trofa Saúde |
| União da Madeira |  Predrag Jokanovic | Macron | Turismo da Madeira | |
| Vitória de Guimarães B | Luíz Felipe | Bruno Alves | Lacatoni | Espaço Guimarães / Smile.Up / Super Bock |