Mario Alberto Rosas Montero (born 22 May 1980), better known simply as Mario Rosas, is a Spanish football manager, who most recently was the technical director of AC Bellinzona in the Swiss Challenge League.
An unsuccessful youth graduate at Barcelona, he went on to appear in 308 Segunda División matches over 12 professional seasons, in representation of five teams, mainly Castellón. During his active footballing career he played as an attacking midfielder.
Rosas was born in Málaga, Andalusia. Another product of FC Barcelona's prolific youth system, La Masia, he quickly excelled at their reserves, making his first-team debut on 15 May 1998 in a 1âÂÂ4 home loss for the already crowned champions against UD Salamanca, in what would be his only La Liga appearance for the Catalans.
Released by Barça in 2000, Rosas signed with another team in the top flight, Deportivo Alavés, but failed to appear regularly, being also loaned to second division's Salamanca in his second season. His career would be highly irregular the following years, with outputs of less than five games â CD Numancia, Cádiz CF, both in the same level â and also playing with Girona FC in division three, with relegation.
Rosas then joined another club in the second tier, CD Castellón, for 2005âÂÂ06. After a slow first year he became an undisputed starter, adding a combined 16 league goals the next three. On 7 September 2008, he scored twice â one from a penalty kick, one of his specialtiesâ in a 2âÂÂ0 home win over RC Celta de Vigo.
In early August 2010, after Murcia's relegation, the 30-year-old Rosas agreed to a two-year deal at his former side Salamanca. After meeting the same fate in Castile and León, he terminated his contract and moved abroad for the first time in his career, signing for FK Khazar Lankaran, an Azerbaijan Premier League club in Azerbaijan.
On 5 December 2012, Hércules CF acquired both Rosas and Pablo Redondo, who were free agents.
Rosas managed Tercera División club Novelda CF between 2018 and 2019.
On 14 June 2021, Rosas became the new manager of Croatian Prva HNL club HNK à  ibenik. à  ibenik opened the 2021âÂÂ22 domestic league season with a 0âÂÂ3 away defeat to Osijek on 16 July. In the next three games, à  ibenik went on to lose to Gorica (3âÂÂ1) and Hajduk Split (1âÂÂ0), and played 1âÂÂ1 with Slaven Belupo.
On 15 August, à  ibenik came to its first win in the league in the first game at home in the league season, defeating Hrvatski Dragovoljac 6âÂÂ2, with two goals from both Stipe BaÃÂeliÃÂ-Grgiàand Antonio Marin, and one goal from Ivan Deliàand Marin Jakolià ¡. After that, à  ibenik failed to defeat Rijeka away (2âÂÂ1), and managed to beat Istra 1961 at home (3âÂÂ1), with a goal from Deliàin both matches, and two goals from Marin Jakolià ¡ in the latter game.
On 5 January 2022, Rosas parted ways with à  ibenik.
On 3 October 2023, he was announced as the new technical director of Swiss Challenge League side AC Bellinzona. He was removed from his post on 18 March 2025.