The purpose of the study is to determine the vigilance as related to male and females and their performance. A Total of 120 aquatic players (60 males and 60 females) were selected for the present study. Cognitive vigilance tast (CVT) was employed to assess the level of vigilance. Mean, SD and ‘t’ test were employed to find out the significance of difference and administered to assess the vigilance of the subjects with regard to gender and their performance. The result of the study revealed that significant differences have been found between male and female achievers and male and female non-achievers swimmers. Conclusion of the study and suggestions for future research are discussed