The aim of the present study was to examine the association between sociocultural influences to attain an ideal body and body change strategies (BCS) in Spanish adolescent boys of different weight status. A total of 594 Spanish boys (M = 13.94 years, SD = 0.20) participated. Measures included in the study were weight status according to body mass index (BMI), sociocultural influences (perceived pressures to attain an ideal body, general internalization of an ideal body, internalization of an athletic-ideal body), BCS to lose/control weight (dieting, healthy and unhealthy weight-control behaviors), and BCS to gain weight and muscles. Underweight boys engaged more frequently in weight-gain behaviors. Overweight boys reported higher levels of perceived sociocultural pressures and general internalization compared to normal-weight boys, and were more likely to be engaged in BCS to lose/control weight compared with the other weight-status groups. There were no differences between groups in terms of internalization of an athletic-ideal body and BCS to increase muscles. Future research and prevention programs should consider male-specific behaviors and weight-status differences.