|Full name||Luis Bernardo Aguiar Burgos|
|Date of birth||17 November 1985|
|Place of birth||Mercedes, Uruguay|
|Height||1.82 m (6 ft 0 in)|
|2006||→ Universidad Concepción (loan)||27||(9)|
|2007||→ Estrela Amadora (loan)||7||(0)|
|2008||→ Académica (loan)||12||(1)|
|2010||→ Braga (loan)||14||(3)|
|2010–2011||→ Braga (loan)||12||(2)|
|2011||→ Peñarol (loan)||11||(2)|
|2011–2012||→ Peñarol (loan)||25||(8)|
|2014||→ Vitória (loan)||10||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 18 February 2018|
‡ National team caps and goals correct as of 18 February 2018
Born in Mercedes, Soriano, Aguiar started his career with Liverpool FC Montevideo. After an impressive season he transferred to FC Porto of Portugal but, after only two months with the club, not being able to reach the first team, he was loaned out, during that season, to C.F. Estrela da Amadora and Académica de Coimbra.
On 11 April 2008, Aguiar scored in a 3–0 surprise victory for the "students" against S.L. Benfica. His very first goal in the Primeira Liga proved crucial for the Coimbra side, which finally narrowly avoided relegation as 12th.
In July 2008, Aguiar remained in Portugal, signing with rising club S.C. Braga. He was essential in helping the Minho team win 11 of their first 15 competitive matches, netting on five occasions. On 23 October 2008 he scored from a free kick in another 3–0 surprising win, this time against England's Portsmouth in the campaign's UEFA Cup.
After having been essential in Braga's qualification for the Europa League, Aguiar moved to FC Dynamo Moscow in Russia, for €2.5 millions. However, only a few months afterwards, he returned to league leaders – eventually finished second – Braga, on loan until June, eventually surpassing Hugo Viana in the club's pecking order at central midfielder. He returned to Dynamo after his loan expired, only to re-sign with the Portuguese the following month, in the same predicament.
Aguiar started 2010–11 again in the starting XI, still under manager Domingos Paciência. However, he would ironically lose his place to Viana, and left in late January 2011, returning to his country after a lengthy absence and joining C.A. Peñarol, still owned by Dynamo Moscow.
On 5 July 2011, Aguiar was sold by Dynamo Moscow to Sporting Clube de Portugal, signing a four-year contract with the Lisbon club and reuniting with former Braga boss Paciência. However, in late September, without having made any official appearances, he returned to Peñarol, again on loan.
On 27 July 2012, Aguiar moved to Argentine Primera División side San Lorenzo de Almagro on a two-year deal. He subsequently returned to Peñarol for a further three Uruguayan Primera División seasons, being loaned to Brazil's Esporte Clube Vitória in 2014.
Aguiar returned to Braga for a fourth spell on 29 June 2016, becoming newly appointed manager José Peseiro's first signing.
Aguiar's brother, Carlos, is also a professional footballer, who also represented Académica.
- "Luis Aguiar fue amenazado en redes sociales" (in Spanish). 18 February 2018.
- "Porto add Bolatti and Aguiar". UEFA.com. 3 July 2007. Retrieved 7 February 2010.
- "Benfica-Académica, 0–3 (ficha)" [Benfica-Académica, 0–3 (match sheet)] (in Portuguese). Mais Futebol. 11 April 2008. Retrieved 7 June 2017.
- "Braga put three past Portsmouth". UEFA.com. 23 October 2008. Retrieved 7 February 2010.
- АГИЯР ПРИСОЕДИНИЛСЯ К «ДИНАМО» (Aguiar joins Dynamo); Dynamo Moscow, 2010 (in Russian)
- "Aguiar e Rubio no Sporting" [Aguiar and Rubio in Sporting] (in Portuguese). UEFA.com. 5 July 2011. Retrieved 5 July 2011.
- "Luis Aguiar confirmado no Braga" [Luis Aguiar confirmed at Braga]. O Jogo (in Portuguese). 29 June 2016. Retrieved 29 June 2016.
- "Hermanos en la cancha" [Brothers on the pitch] (in Spanish). Taringa. 2014. Retrieved 5 January 2017.