Albert Costa Casals (Catalan pronunciation: [əlˈβɛɾ(t) ˈkɔstəj kəˈzals]; born 25 June 1975) is a Spanish former professional tennis player.

He turned professional later that year and quickly established a reputation as a strong clay court player.

Costa won his first top-level singles title in 1995 at Kitzbühel, beating the "King of Clay", Thomas Muster, in a five set final.

He won another two singles titles in 1998, including the Tennis Masters Series event in Hamburg and played at magnificent level at the French Open, only a brilliant Marcelo Ríos could stop him at fourth round, but he established the bases for his future winning in 2002.

Ferrero had been in fine form in the run-up to the event and most observers considered him to be the heavy favourite going into the final.

Citing recurring injuries and lack of desire, he officially announced his retirement from competitive professional tennis on 21 April 2006, at the completion of the Open Seat 2006 in his hometown in Barcelona.

In his last tournament, Costa defeated American Vincent Spadea and Slovakian Dominik Hrbatý before losing 6–1, 5–7, 7–5 to Ferrero in the third round.

In December 2008, Costa was named Spain's Davis Cup captain, replacing Emilio Sánchez Vicario.

Less than a week after his triumph at the 2002 French Open, Costa married his long-time girlfriend Cristina Ventura.