This study aims to adapt and validate the Indonesian version of the Sport Anxiety Scale-2 (SAS-2Id). Data were obtained from a total of 268 (male = 154 and female = 114) elite athletes of Papua Indonesia with an age range of 16 to 43 years (M = 22.40 ± 5.01). Furthermore, language adaptation and validation were carried out through a forward-backward translation process using confirmatory factor analysis (CFA). An internal consistency approach was used to test for the reliability based on Construct Reliability (CR). The results evaluate the fit of the models showed that the SAS-2Id fit based on RMSEA, CFI, TLI, and PNFI. The three dimensions of SAS-2Id had standardized coefficient values from .77 to .81, with a significant p-value of ≤ .001. The SAS-2Id item factor loading values ranged from .51 to .88, indicating that it is above the recommended threshold (≥ .50). Furthermore, the reliability test carried out using the internal consistency approach discovered that the dimensions of worry (AVE = .60) and concentration disruption (AVE = .50) were above the recommended cutoff points. In contrast, the somatic dimension had the lowest value (AVE = .35). However, from the other two reliability test parameters, it was discovered that the CR and Cronbach's Alpha values were from .73 to .88 and .71 to .88, respectively, which indicated good reliability values. Therefore, the psychometric property at the Indonesian version of the SAS-2 is a valid and reliable measuring instrument for anxiety levels.