|Full name||Sebastián Losada Bestard|
|Date of birth||3 September 1967|
|Place of birth||Madrid, Spain|
|Height||1.80 m (5 ft 11 in)|
|1984–1987||Real Madrid B||64||(18)|
|1987–1988||→ Español (loan)||28||(8)|
|* Senior club appearances and goals counted for the domestic league only|
A Real Madrid youth graduate, Madrid-born Losada made his first-team debut on 9 September 1984 in a 1–1 away draw against Sporting de Gijón, but would not have a successful period with the capital side. He did, however, score eight La Liga goals in just 16 appearances in the 1989–90 season as Real were crowned champions, adding the club's goal number 400 in the European Cup in a 2–2 draw at FC Tirol Innsbruck on 7 November 1990.
In 1987–88, Losada served a loan stint with RCD Español and netted eight top division goals during the campaign, also helping the team reach the UEFA Cup final: he scored twice in the first leg for the Catalans (3–0), but missed his penalty shootout attempt in the eventual loss against Bayer 04 Leverkusen.
Subsequently, Losada played for Atlético Madrid (frequently feuding with club president Jesús Gil), Sevilla FC – where he coincided with Diego Maradona – and RC Celta de Vigo. After a shock retirement at only 27 he became a lawyer, and also unsuccessfully ran for president of the Royal Spanish Football Federation in 2004.
Losada earned his first and only cap for the Spain national team on 18 January 1995, playing the second half of a 2–2 friendly draw with Uruguay in A Coruña. He also appeared for the under-20s at the 1985 FIFA World Youth Championship, scoring three goals in five matches for the runners-up.
- 1–1: Y todos contentos (1–1: Everybody happy); Mundo Deportivo, 10 September 1984 (in Spanish)
- 4–0: Para el Madrid, todo fue cómodo (4–0: All easy for Madrid); Mundo Deportivo, 15 October 1989 (in Spanish)
- 5–2: El Real hizo bueno el pronóstico (5–2: Real delivered as promised); Mundo Deportivo, 26 February 1990 (in Spanish)
- Losada fue el "rey" del Tirol (Losada was "king" of Tirol); Mundo Deportivo, 8 November 1990 (in Spanish)
- "Real Madrid CF – All the players in European Cups". RSSSF. Retrieved 26 February 2015.
- ¡Y continua la "Euro-fiesta"! ("Euro-party" continues!); Mundo Deportivo, 5 May 1988 (in Spanish)
- La década «ostentórea» (The "ostentórea" decade); El Mundo (in Spanish)
- Sebastián Losada; Yo Jugué en el Celta, 21 April 2008 (in Spanish)
- Losada anuncia su candidatura para presidir la federación (Losada announces candidacy as federation president); El País, 1 October 2004 (in Spanish)
- Con lo justo (Barely); Mundo Deportivo, 19 January 1995 (in Spanish)
- Sebastián Losada – FIFA competition record
- Díez, Óscar (1 November 2014). "España en los mundiales sub'20: URSS 1985" [Spain in the under’20 World Cups: USSR 1985] (in Spanish). Cuadernos de Fútbol. Retrieved 14 June 2018.