In this study; Joining stainless steels with laser welding and the effects of nitriding process on laser welding were investigated. In the mechanical tests applied to AISI 304L austenitic stainless steel samples joined with 3 different power parameters by laser welding method, it was seen that the optimum results were in the 2nd sample joined with 1500 Watt power. Experiments 4 and 5, in which nitriding processes were applied before and after welding, were carried out based on the parameters of joint 2, which gave optimum results in terms of microstructure and mechanical properties. As a result of the examinations, it was determined that the weld penetration in all welded samples was sufficient, the penetration of the welded joint was appropriate, the microstructures of the main material resembled the microstructure of co-grained austenitic stainless steel, dendritic and columnar structures directed towards the weld center were formed in the weld metal, and HAZ had a narrow area as a characteristic feature of laser welding. has been found to occur in the region. Although the strength and elongation values of the samples, where welding and nitriding processes were carried out at the optimum parameter, showed values close to experiment number 2, the highest tensile test results were detected in experiment number 2, and all ruptures occurred in the HAZ region. As a result of bending tests; It has been understood that welded joints do not have any negative effects on the ductility of the samples and exhibit ductility similar to the main material. In microhardness examinations; It was concluded that the highest microhardness results were in the HAZ regions.