The objective of this study was to determine the effect of various dry-aging methods on meat quality and palatability attributes of cull cow beef loins. Paired bone-in loins (M. longissimus lumborum) from 13 cull cow carcasses (Holstein, 42+ mo) were obtained at 5d postmortem, divided into four equal sections and randomly assigned into 4 aging methods (wet-aging [WA], conventional dry-aging [DA], dry-aging in water permeable bag [DWA], and UV-light dry-aging [UDA]). The beef sections were aged for 28d at 2°C, 65% relative humidity and 0.8 m/s airflow. Following aging, surface crusts and bones were removed and loin samples were collected for the meat quality, microbiological and sensory analyses.Results indicated that all dry-aged loins had greater moistureand trimming loss compared to WA (P<0.05), while DWA had lower loss than DA and UDA (P<0.05). No differences in shear force, cook loss and both lipid and protein oxidation across all treatments were observed (P>0.05). Among all treatments, DWA exhibited the least color stability indicated by rapid discoloration observed in the sample, while UDA had color attributes comparable to WA throughout the whole display. Microbial analysis indicated that UDA had lower microbial concentration on the surface than the other samples (P<0.05). The consumer panel analysis found that all loins were acceptable and the trained panel analysis indicated that DA loins had lower sour and fatty flavor attributes compared to WA (P<0.05). The results indicate that dry-aging can potentially be utilized as the effective natural process to improve cull cow beef palatability without compromising other meat quality attributes or microbiological shelf-life.