The aim of this study is to determine the relationship between orientation and rhythm ability of children doing karate. Children who do karate from Turkey participated in the study. Their age is 14.60 ± 0.82 years; height, 1.60 ± 0.06 m and weight, 53.40 ± 7.01 kg. 20 numbered medicine ball run tests and sprint test with given rhythm were used to determine orientation and rhythm ability of the subjects. The study showed that their rhythm ability affected their orientation performance (p<0.05). Rhythm ability (r=0.456) displayed a positively significant relationship (p<0.05). In conclusion, the rhythm ability affected the orientation performance of the children. It is expected that the orientation ability will develop when the rhythm ability is developed.