Aluminum and its alloys have wide range of applications in many industries due to low density, good corrosion resistance and acceptable strength to weight ratio. 7075-aluminum alloy has zinc as an important alloying element and exhibit high mechanical strength as is comparable with steel. This alloy has good fatigue resistance and machinability but lower corrosion resistance than other aluminum alloys. Strength improvement of this type of aluminum alloy is due to precipitation hardening mechanism and drop significantly during fusion welding methods which work in temperature range higher than melting temperature. So, in order to keep the primary properties of sample, it is more interesting to use new solid state welding methods. Aluminum alloys with aerospace application, already have shown low weldability using conventional fusion welding procedures. Friction stir welding is performed in the solid state, high-yield process, which has created new opportunities to be healthier and more reliable connections with the high welding speed. In this work, the effects of two important FSW parameters on mechanical and tribological properties of 7075-W aluminum alloy are investigated. Samples were welded using FSW process at different rotational and traverse speeds. Mechanical properties of all samples were evaluated using tensile and microhardness tests. In order to evaluate the wear behavior, samples were tested using reciprocal wear test and scanning electron microscopy. Results from tensile test have shown that yield strength and elongation is decreased for welded sample compare to unprocessed raw material and it's more decreased with increasing traverse speed at low rotational speed. Wear behavior is evaluated by plotting reduced mass in terms of distance and results showed that wear resistance is decreased with increasing traverse speed at low rotational speed but increased with increasing traverse speed at high rotational speed. SEM micrographs revealed that combined adhesive and abrasive mechanisms are dominant for 1500 rpm-60 mm/min sample while delamination mechanisms is dominant for 1000-30 sample. Key Words: 7075 aluminum alloy, friction stir welding, tribological properties .