Acquiring a suitable keyboard layout is an optimization problem that different methods have been offered to solve it. As the answer is the most appropriate permutation for letters on the keyboard, that it is 33 letters for Persian keyboard. In this paper, a Persian keyboard layout has been proposed using Evolutionary Strategy(ES) that has been improved for typing speed and it rectified some problems of current layout. The used fitness function, calculates typing time for any Persian letter pairs. This function uses some parameters like hand transition, finger transition, finger weight and so on. The experimental results show that the proposed algorithm, attains a Persian keyboard layout that is faster than the current layout and other layouts that have been acquired in related works.