Ernst Franz Hermann Happel was an Austrian football player and coach. He is regarded as one of the most successful managers ever, winning both league and domestic cup titles in the Netherlands, Belgium, Germany and Austria as well as winning the European Cup twice, the first in 1970 and the second in 1983, and a runners-up medal at the 1978 FIFA World Cup. He was the first of the five managers to have won the European Cup with two clubs, Carlo Ancelotti, Ottmar Hitzfeld, José Mourinho and Jupp Heynckes being the other four. He is also one of six managers – along with José Mourinho, Carlo Ancelotti, Giovanni Trapattoni, Tomislav Ivić and Eric Gerets – to have won domestic league championships in at least four countries.
