The purpose of the study was to find out the relationship between the height, leg length and swimming ability among male professional swimmers in Karnataka State. To achieve this purpose of the study, forty male professional swimmers in Karnataka State were selected as subjects at random. The following variables namely height, leg length and swimming ability were selected as variables. All the subjects of two groups were tested on selected variables namely height, leg length and swimming ability by using stadiometer, flexible measuring tape and subjective rating method respectively. The person product moment correlation was used to analyze the significant relationship, if any between height and swimming ability. The .05 level of confidence was fixed as the level of significance to test the correlation value obtained, which was considered as an appropriate. The results of the study showed that there was a significant relationship between height and swimming ability among male professional swimmers in Karnataka State. Further, the results of the study showed that there was a significant relationship between leg length and swimming ability among male professional swimmers in Karnataka State