#3 Luis Enrique
Perhaps the least fancied manager in this illustrious list, Luis Enrique can still not be ignored when it comes to gaffers who have won the treble. The former Spain international joined Barcelona in the summer of 2014 amidst very little fanfare.
However, in his three years in charge, his record was one of the best the club has ever seen from a manager. In Enrique’s first season, he impressively led Barcelona to the treble. He reinvented the tiki-taka as well, combing fast attacking play with effective building from the back.
By the time he managed 50 games, he already had 42 wins – the best record of any Barcelona manager. He went on to win LaLiga, and later completed the domestic double after Barca defeated Atletico Madrid 1-0 in the final of the Copa del Rey.
That season climaxed with the biggest achievement of all, with his Barcelona side winning the Champions League, following a 3-1 win over Juventus in the final. Barca fans may not have liked him, but Enrique definitely delivered in his time at the Camp Nou, and his treble winning season stands out.