@lain
Václav Havel
Karel Čapek
Wolfgang Amadeus Mozart

Sorry, it's hard to say from inside of czech republic.

Companies
Games:
Arma,Kingdom come,Space engineers, factorio, Mafia...

Cars
Škoda

Beers
Budweiser, Radegast, Gambrinus, Pilsner urquell, too many for me to add