Since, estimation of VO2max is an important index for high level performances in training and competition periods, this study was done in order to identifying validity of Rockport and Queen exercise tests for estimation of VO2max in east Azerbaijan male Karatekas. Fifteen male elite karate competitors in east Azerbaijan [aged 19.4±2.02 years, BMI 21.45±2.84 Kg/m2] were voluntarily participated in this study. VO2max of the subjects were separately measured by standard (Balke treadmill) and field (Rockport & Queen) exercise tests. Data were statistically analyzed by correlation and one-way ANOVA methods. Relationship between estimated VO2max in laboratory and field exercise tests was statistically significant (rBR 1 = 0.525, rBQ 2 = 0.626, p≤0.05). In addition, Relationship between estimated VO2max in laboratory and recovery heart rate in field exercise tests was statistically significant (rBR= - 0.747, p≤0.001; rBQ= -0.626, p≤0.012). However, estimated VO2max in Queen Step test was slightly underestimated (%13.60) from two other tests (F=15.37, p≤0.00001). Our results show that Rockport and Queen Exercise tests were valid for estimation of VO2max in male elite karate competitors. Although, estimated VO2max in Queen Step test was slightly underestimated from two other tests. However, estimation of VO2max could predict using provided linear regression equations.