Giraffe (Giraffa spp.) population numbers and distribution have shown dramatic declines across their global range (>30%) over the past 35 years. A century ago, the population size in the wild was estimated at >1 million. At present, there are ∼117 000 individuals remaining, of which 50% are in southern Africa. With substantial giraffe populations in the region, opportunities exist to re-introduce and establish founder populations in areas where they have become locally extinct. We assessed the potential for re-introducing Angolan giraffe (G. giraffa angolensis) into Iona National Park (NP), Angola, where they historically occurred. Our study investigated home range extent and preferred forage species of an Angolan giraffe population in northwest Namibia to assess the suitability of Iona NP for giraffe in terms of spatial requirements and food sources. Overall home ranges of giraffe in northwest Namibia were larger than in more temperate areas, an important aspect to consider when determining suitable habitat in Iona NP. Although arid riparian woodlands along ephemeral rivers formed the main habitat, the tagged animals moved independently of water and generally avoided human settlements. Species richness and diversity of giraffe forage species were encouragingly higher in Iona NP compared to northwest Namibia. We conclude that Iona NP is suitable with regard to available forage and size of habitat for the potential re-introduction of giraffe.