The Copa del Rey champion was Arenas.
Celtic were the winners of the Scottish Premier League in 1919.
There was no the Belgian League competition in 1919.
There was no competition of the Italian League in 1919.
Celtic won the Scottish League Cup in 1919.
AFC Ajax were the winner of the Eredivisie league in 1919.
The winners of the Veikkausliiga league cup in 1919 were the HJK.
FC Barcelona won the Spanish League in 1991.