Sponsor Name: Unknown
Year Founded: 1977
Country: Spain
Number of teams: 13
Record-holding champions: Real Racing Club (2), Real Madrid Castilla (2), Pontevedra CF (2)
Reigning champion: UD Logroñés
Top Rated Players
Players| # | Player | Rating | |
| 1 |  | Dias Charles | 81 |
| 2 |  | Jesús Berrocal | 79 |
| 3 |  | Antonio Cotán | 79 |
| 4 |  | José Fran | 79 |
| 5 |  | Iker Hernández | 79 |
Segunda B I Clubs
| Club | Manager | Stadium | Location | |
 | Atlético Madrid B | Víctor Afonso | Cerro del Espino | Madrid |
 | CD Numancia | Unknown | Nuevo Los Pajaritos | Soria |
 | Club Marino | José Luis Quirós | Miramar | Luanco |
 | Coruxo | Rafa Saez | O Vao | Coruxo |
 | Getafe CF B | Mateo García | Ciudad Deportiva | Getafe |
 | Las Palmas Atlético | Unknown | Anexo | Las Palmas |
 | Las Rozas CF | Unknown | Navalcarbón | Las Rozas de Madrid |
 | Pontevedra CF | José Luís Míguez Iglesias | Pasarón | Pontevedra |
 | Real Oviedo B | Unknown | El Requexón | Oviedo |
 | Real Sporting B | Tomas Hervas | Mareo | Gijón |
 | SCR Peña Deportiva | Unknown | Estadio Municipal de Santa Eulària | Santa Eulària des Riu |
 | UD Melilla | Unknown | Álvarez Claro | Melilla |
 | Unión Popular de Langreo | José Antonio Redondo | Estadio Ganzábal | Langreo |
Segunda B I Referees
| None |
Segunda B I Club History
| Season | Club | |
| 2019/2020 |  | UD Logroñés |
| 2018/2019 |  | CF Fuenlabrada |
| 2017/2018 |  | Rayo Majadahonda |
| 2016/2017 |  | Cultural Leonesa |
| 2015/2016 |  | Real Racing Club |
| 2014/2015 |  | Real Oviedo |
| 2013/2014 | | Real Racing Club |
| 2012/2013 |  | CD Tenerife |
| 2011/2012 |  | Real Madrid Castilla |
| 2010/2011 |  | CD Lugo |
| 2009/2010 |  | SD Ponferradina |
| 2008/2009 |  | Real Unión |
| 2007/2008 |  | Rayo Vallecano |
| 2006/2007 | | Pontevedra CF |
| 2004/2005 | | Real Madrid Castilla |
| 2003/2004 | | Pontevedra CF |
| 2001/2002 |  | Barakaldo CF |
| 2000/2001 | | Atlético Madrid B |
| 1998/1999 |  | Getafe CF |
| 1997/1998 |  | CP Cacereño |
| 1996/1997 | | Real Sporting B |