Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea to the south in the Atlantic Ocean. It covers an area of 923,769 square kilometres (356,669 sq mi); with a population of over 230 million, it is the most populous country in Africa, and the world's sixth-most populous country. Nigeria borders Niger in the north, Chad in the northeast, Cameroon in the east, and Benin in the west. Nigeria is a federal republic comprising 36 states and the Federal Capital Territory, where the capital, Abuja, is located. The largest city in Nigeria is Lagos, one of the largest metropolitan areas in the world and the largest in Africa.

നൈജീരിയ ആഫ്രിക്കൻ വൻകരയുടെ പടിഞ്ഞാറു ഭാഗത്തുള്ള രാജ്യമാണ്‌. ആഫ്രിക്കയിൽ ഏറ്റവും കൂടുതൽ ജനസംഖ്യയുള്ള രാജ്യമാണിത്‌. ബെനിൻ, ചാഡ്‌, കാമറൂൺ, നൈജർ എന്നിവയാണ്‌ അയൽരാജ്യങ്ങൾ. അബുജയാണ്‌ നൈജീരിയയുടെ തലസ്ഥാനം.