One of the most common and most conventional way to protecting a coastal area from excessive wave action is built rubble mound breakwaters. Main cost of the breakwater construction is due to the supply and transport costs of very heavy rocks from the quarries to the construction sites or built artificial blocks such as tetrapods, cubes, antifers. Usually, rubble-mound breakwaters consist of a single or double rows armor layer, one or more inner layer filled with relatively smaller size rocks, and of an impermeable core part. In this study, geogrid application in breakwaters as an inner layer and their efficiency from the stability point of view was experimentally studied. The aim of the study was to investigate the performance of geogrid as an alternative for one or two-layer inner zones in breakwaters in order to ensure an easier construction and more economical solution.