Nigeria maintained their streak of qualifying for every Women's World Cup as they edged Cameroon 1-0 at the Women's Africa Cup of Nations in Casablanca on Thursday to book a spot in next year's tournament in Australia and New Zealand.
They will be joined by South Africa, who also qualified on Thursday when they beat Tunisia 1-0 in Rabat in their respective quarterfinal to move on to the semis.
Morocco and Zambia booked their places in the last four on Wednesday.
The top four finishers at WAFCON, which is being hosted in Morocco, are guaranteed places at next July's Women's World Cup.
Rasheedat Ajibade's 56th minute header handed Nigeria victory and a ninth Women's World Cup finals appearance.
South Africa won with a 14th minute goal from Jermaine Seoposenwe to qualify for a second successive tournament.