The proper use of Insecticides treated nets (ITNs) has been adjudged an efficacious and cost-effective method for curbing malaria. Despite the distribution of ITNs in Nigeria, malaria remains one of the major causes of morbidity and mortality, especially among children below 5-years-old. This systematic review was intended to document the factors mitigating the use of ITNs in Nigeria. Scholarly articles published from the year 2000 through 2018 were reviewed. Six (6) databases (Medline, PubMed, Cinahl Plus, Embase, AJOL and Malaria Journal) were searched for literatures related to the review title, out of which 17 studies were included in this systematic review. This study identified seven (7) themes that mitigate ITNs usage. These are; Heat, low mosquito activity, phobia for chemicals, lack of space and difficulty in hanging nets, preference for other preventive measures, ignorance and cultural beliefs. The heat generated from nets and perceived low activity of mosquitoes contributes to the non-use of ITNs. Also, the fear of chemicals used in the nets, ignorance of the nets, and methods of re-treatment of nets also mitigates the use of ITNs. The difficulties encountered in hanging nets, preference for insecticide sprays, mosquito coils, as well as beliefs (cultural) that malaria should be treated by traditional herbs were found to affect the use of ITNs in Nigeria. Therefore, continuous awareness campaign for malaria prevention with emphasis on the protective effects of ITNs is strongly suggested.