The 1999–2000 Sporting de Gijón season was the second consecutive season of the club in Segunda División after its last relegation from La Liga.
After the 33rd round, Pedro Braojos was sacked and Ciriaco Cano, former player of the club, replaced him at the helm of the first squad.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.
Players may hold more than one non-FIFA nationality.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.