In this present investigation, dry sliding wear behavior of AA 6061 nanocrystalline and AA 6061-2 weight percentages (2 wt.%) of multi-walled carbon nanotubes (MWCNTs) nanocomposites prepared by 30 h of mechanical alloying (MA) was investigated. Dry sliding wear behavior of prepared nanocomposites at room temperature was estimated by a pin-on-disc wear testing apparatus. Oil hardened non shrinking (OHNS) steel disc was used as the counter face material. Wear tests were conducted for normal loads of 5, 7 and 10 N at various sliding speed such as 0.6, 0.9, 1.2 m/s with the varying sliding distances (500 m, 1000 m and 1600 m). It was found that, MWCNTs reinforced AA 6061 nanocomposites have low wear rate and less coefficient of friction compared to AA 6061 nanocrystalline. The worn surface morphologies were analyzed by using scanning electron microscopy (SEM). At lower loads, abrasion was the dominant wear mechanism and at higher loads oxidation was the dominant wear mechanism. The formation of oxide layer on the worn surface was examined by energy dispersive spectroscopy (EDS). The results indicated that the addition of MWCNTs as a reinforcement increases the wear resistance of AA 6061 matrix.