Ambrosio José Martín Cedres (born 30 April 1968) is a Spanish former handball player and current coach.
He was named Coach of the Year in the Women's EHF Champions League for the past four years (2015–2018).
In the summer of 2012, he replaced Karl Erik Bøhn as head coach of Gyori Audi ETO KC.
Contemporaneously with his job in Hungary, he has been also coaching the Romania women's national handball team since 4 October 2016.
In February 2018 he announced, that he will not extend his contract with Gyor and will leave the club at the end of the season.
Since the summer of 2018, he is the head coach of Rostov-Don.
In May 2019 his contract at the Romanian national team was terminated on mutual consent.
In August 2019 he replaced Yevgeni Trefilov as the head coach of the Russian national team.Martín was the first Spanish coach to win the Champions League trophy with a foreign club.