| Karel Mallants | |
| Birth Date: | 1935 11, df=yes |
| Years1: | 1953–1956 |
| Clubs1: | Wezel Sport |
| Years2: | 1956–1963 |
| Clubs2: | Standard Liège |
| Caps2: | 123 |
| Goals2: | 37 |
| Years3: | 1964–1967 |
| Clubs3: | Royal Tilleur |
| Nationalyears1: | 1958–1960 |
| Nationalteam1: | Belgium |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 1 |
Karel Mallants (born 4 November 1935) is a retired Belgian football midfielder.