<![CDATA[This study aims to determine the influences of internal and external variables of Islamic banks towards technical efficiency (TE)of Islamic banks in ASEAN 2013-2018. The data represented the sample from each country. The study was analyzed using two-step processes. The first stage is looking for technical efficiency (TE) with the Stochastic Frontier Analysis (SFA) as an intermediation approach. The second stage is conducting panel data regression analysis to determine the influence of internal and external variables of Islamic banks towards TE score. The result of the study indicates that the average TE value of Islamic banks in ASEAN at the periods of the study has very good efficiency of 0.92 (92.8 percent). Respectively, Islamic banks in Indonesia have TE score higher than Malaysia. Meanwhile, Islamic banks in Brunei Darussalam have the highest TE score, followed by Islamic banks in Thailand and the Philippines. The variable of total assets (lnTA), Degree of Capitalization (EQTA), and Bank's Financing Intensity (FINTA) have a positive and significant effect on the value of TE and the variable of economic growth (GDP) and inflation rate (CPI) have no effect on TE of sharia banks.Keywords: Technical Efficiency, Islamic Bank, ASEAN, Stochastic Frontier AnalysisREFFERENCE Abdul-majid, A. M., Saal, D. S., Battisti, G., Journal, S., August, N., & Saal, M. A. D. S. (2016). Efficiency in Islamic and conventional banking : an international comparison efficiency in Islamic and conventional banking : an international comparison, 34(1), 25–43.Aigner, D., Lovell, C. A. K., & Schmidt, P. (1977). Formulation and estimation of stochastic frontier production function models. Journal of Econometrics, 6(1), 21–37. Al-Gasaymeh, A. (2016). Bank efficiency determinant: Evidence from the gulf cooperation council countries. Research in International Business and Finance, 38, 214–223. Alqahtani, F., Mayes, D. 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