<p>Religious and cultural practices are common instruments of the Traditional Ecological Knowledge (TEK) system of conservation and management of natural resources in many African societies. The influence of Igbo religious practices on conservation of biodiversity in Southeastern Nigeria has been studied. This research was carried out to investigate the various religious and cultural practices of the Igbo communities of Southeastern Nigeria that are useful in the conservation of biodiversity. A qualitative approach for data collection was adopted. Methodology of the study involves the use of In-dept interview (IDI), Focus Group Discussion (FGD) and site visitation. Findings show that Igbo religious practices are concerned with various plant species that are of great use in traditional religious practices such as nature worship, medicine and ritual purposes. The result from the IDI and FGD identified numerous plant species used in religious and cultural practices in Igbo religion such as Ogirisi tree (Newboudia laevis), Ogbu tree (Ficus spp.), Akpu tree (Bombax baenopozense), Ofo tree (Detarium senegalense), Aku inu tree (Garcinia cola), Oseoru (Aframomum melegueta), Omunkwu (Elaeis guinensis) leaf and Cola nut (Cola nitida) which are of particular significance in traditional religious practices. Result also indicate that these plant species are revered which help in their conservation in the study area. It was also found that the Igbo people respect traditional biodiversity conservation regulatory measures more than the government laws and policies because they were driven by local traditional institutions. This finding informed the suggestions that government should partner with the Igbo traditional institutions in establishment of forest reserves, wildlife sanctuary and co-management of biodiversity conservation in order to meet the objectives of biodiversity conservation in Igboland.</p>