This paper develops indicators for transformational leadership of undergraduate students at Thailand National Sports University. The development of these indicators was based on in-depth interviews with six informants. The research instrument was a semi-structured interview form. The data collected were inductively analyzed. The development of indicators was accomplished through the synthesis of the data and the conceptual framework for this research investigation. Evaluate indicators of Accuracy Standard Propriety Standard with of five experts was compared with the principle of 3.50, using the research instrument was an Evaluation Form and thence the verification of the quality of the congruence of the indicators. The sample population consisted of 450 undergraduate students at Thailand National Sports. The research instrument was a rating-scale questionnaire. Confirmatory factor analysis (CFA) was utilized in conjunction with reliance on the maximum likelihood estimation (MLE) technique. Findings were as follows: 1) In regard to the development of indicators for transformational leadership of undergraduate students at Thailand National Sports University, results were as follows: The aspect of idealized influence engendered eight keywords and twenty-two subtopics. The aspect of inspiration motivation exhibited six keywords and thirteen subtopics. The aspect of intellectual motivation evinced six keywords and fourteen subtopics. The aspect of individualized consideration displayed five keywords and eleven subtopics. 2) Assessing indicators for transformational leadership of undergraduate students at Thailand National Sports University All aspects were significantly higher than the threshold 3.50 at the .05 level. 3) The development of indicators for transformational leadership of undergraduate students at Thailand National Sports University were found to have twenty-five indicators. The verification of the quality of appropriateness for the indicators for transformational leadership of undergraduate students at Thailand National Sports University showed that chi-square (X[superscript 2]) was at 552.93; (probability-value [p-value] at 0.000); degrees of freedom (df) at 271; relative X[superscript 2] at 2.04; goodness of fit index (GFI) at 0.91; adjusted goodness of fit index (AGFI) at 0.90; Normal Fit Index (NFI) at 0.99; Comparative Fit Index (CFI) at 0.99 and the root mean square error of approximation (RMSEA) at 0.04. It is concluded that transformational leadership of undergraduate students at Thailand National Sports is consistent with empirical data.