Karel Černý is the name of:
- Karel Černý (actor) (1892–?), Czechoslovak actor in The Blue Star Hotel
- Karel Černý (art director) (1922–2014), Czech Academy Award winner
- Karel Černý of the Prague Section of IADR
- Karel Černý (footballer) (born 1910), represented Czechoslovakia in the 1938 FIFA World Cup
- Karel Černý (rower), Czechoslovak rower who came second in quad scull at the 1977 World Rowing Championships
- Carl Czerny (1791–1857), Austrian pianist, composer and teacher