Gustavo Adolfo Costas Makeira (born 28 February 1963) is an Argentine football manager and former player who played as a centre-back.

After making his first team debut in 1981, he saw the club's first-ever relegation from the Primera División from the stands, as he was nursing a knee injury.

[1] After retiring, Costas joined the youth categories of his main club Racing, before being named manager of the first team along with Humberto Maschio on 17 December 1998.

[8] He immediately led them to success in the 2003 Clausura, and then saw his team win the Primera División Peruana final against Sporting Cristal.

In 2004, Costas led Alianza to the Apertura 2004 title and another chance to win the final of the Primera División where they again defeated Sporting Cristal, this time 5–4 on penalties.

On 11 April 2012, Costas switched teams and countries again, after being announced as manager of Ecuadorian side Barcelona SC on a one-year deal.

[24] On 27 November 2015, Costas replaced Gustavo Matosas at the helm of Liga MX side Atlas.

[28] On 1 November 2017, Costas replaced Constantin Gâlcă as manager of Al-Fayha back in Saudi Arabia.

[32] On 20 December 2021, Costas replaced compatriot Patricio Graff as manager of Chilean club Palestino.

[33] On 19 August 2022, Costas confirmed as manager of the Bolivia national team, effective as the following November, once his season with Palestino ended.