Electronic Journal of Differential Equations, Vol. 2022 (2022), No. 12, pp. 1-23. Title: Homogenization of boundary optimal control problem Author: Indira Mishra (Indian Inst. of Information Tech. Lucknow, Uttar Pradesh, India) Abstract: In this article, we study the asymptotic behavior of solutions to some optimal control problems, governed by an elliptic boundary value problem with Robin boundary conditions in a periodically perforated domain. The coefficients of the differential operator in the state equation and in the cost-functional are rapidly oscillating. We also study the boundary homogenization of some optimal control problems. Submitted June 21, 2021. Published February 17, 2022. Math Subject Classifications: 35B27, 35J20, 35J56, 35Q93, 49J20. Key Words: Homogenization; optimal control; periodic unfolding method; elliptic problems; boundary control