Visa requirements for Nigerian citizens are administrative entry restrictions imposed by the authorities of other states on citizens of Nigeria. As of 1 January 2017, Nigerian citizens had visa-free or visa on arrival access to 44 countries and territories, ranking the Nigerian passport 91st in terms of travel freedom (tied with Burundian passport) according to the Henley visa restrictions index.
Where visa-free access is permitted, such access is not necessarily a right, and admission is at the discretion of border enforcement officers. Visitors engaging in activities other than tourism, including unpaid work, may require a visa or work permit.
References
Visa requirements for Nigerian citizens Wikipedia(Text) CC BY-SA