The present work attempts to determine the most suitable surface processing techniques to reduce the slipping risk of pedestrians while walking barefoot and wearing shoes on marble coverings. In this study, slip angles of surface-processed marbles in different plate dimensions have been determined by using DIN EN 51097, DIN EN 51130, and TS EN 14231 Standards "The determination of the characteristics that reduce slipping on wet, barefoot surfaces." Slip angles and surface slip resistances have been determined by using ramp test equipment and pendulum method on five different types of classified marbles applied polishing and honing surface processing techniques. It was found that the parameters which affected slip resistance and slip angle values of the marbles were plate size and the applied surface processing techniques. The marbles were then grouped according to safe utilization places depending on slip angles and slip resistances, according to the statistical results.