Climatic variability, resource availability, and anthropogenic impacts heavily influence an animal's home range. This makes home range size an effective metric for under-standing how variation in environmental factors alter the behavior and spatial distribution of animals. In this study, we estimated home range size of African elephants(Loxodonta africana) across four sites in Namibia, along a gradient of precipitation and human impact, and investigated how these gradients influence the home range size on regional and site scales. Additionally, we estimated the time individuals spent within protected area boundaries. The mean 50% autocorrelated kernel density estimate for home range was 2200 km2 [95% CI:1500–3100 km2]. Regionally, precipitation and vegetation were the strongest predictors of home range size, accounting fora combined 53% of observed variation. However, different environmental covariatesexplained home range variation at each site. Precipitation predicted most variation (upto 74%) in home range sizes (n = 66) in the drier western sites, while human impactsexplained 71% of the variation in home range sizes (n = 10) in Namibia's portion of theKavango-Zambezi Transfrontier Conservation Area. Elephants in all study areas main-tained high fidelity to protected areas, spending an average of 85% of time tracked onprotected lands. These results suggest that while most elephant space use in Namibiais driven by natural dynamics, some elephants are experiencing changes in space usedue to human modification. Keywords: Elephants, home range, movement, Namibia.