Miguel Ángel Llera Garzón (born 7 August 1979) is a Spanish football manager and former professional player who played as a centre back.

He moved to England in 2008 after signing with Milton Keynes Dons, going on to remain in the country until his retirement and represent a host of clubs, mainly Sheffield Wednesday (three years) and Charlton Athletic (two).

After unsuccessfully emerging through local Recreativo de Huelva's youth ranks, he represented several modest clubs until 2005–06, when he contributed with 27 games (scoring three times) to Gimnàstic de Tarragona's[1] return to La Liga after a 56-year absence;[2] midway through the following season, however, he was released from contract after appearing in 12 matches (all starts) for the Catalans and scoring in defeats against Real Sociedad (2–3, away)[3] and Getafe CF (1–3, home),[4] as Nàstic were immediately relegated.

[12] After leaving Charlton at the end of the 2010–11 season, Llera spent some time training with Blackpool and joined them on trial, making his debut against Rangers on 19 July 2011.

[16][17] On 11 February, in a game against Exeter City, he suffered a head injury in an eventual 1–2 away loss,[18] going on to miss approximately one month of action.

[29][30] Starting in July 2015 and with the duration of one year, Llera was part of the staff at Sheffield FC, acting as assistant manager as well as being responsible for subjects concerning the academy.

[31] In September 2015, he became the club's scholarship football coach and also second and third team manager at Sheffield Hallam University;[32] in addition, he held the same position at Meadowhead School Academy Trust.