Celtic F.C. is a professional soccer team.
The 1970 European Cup Final was a football match held at the San Siro , Milan , on 6 May 1970 , that saw Feyenoord of the Netherlands defeat Celtic of Scotland 2-1 after extra time . Association football , more commonly known as football or soccer , is a team sport played between two teams of eleven players with a spherical ball . Celtic F.C. . Celtic have won the Scottish league championship on 48 occasions , most recently in the 2016 -- 17 season , the Scottish Cup 37 times and the Scottish League Cup 16 times . The Scottish League Cup , currently known as the Betfred Cup for sponsorship reasons , is a football competition open to all Scottish Professional Football League ( SPFL ) clubs .