Until the present day, there have been no railways in Niger.
In 2005, a new railway was proposed, from Parakou in Bénin (where it would connect with Bénin Railways) via Dosso to Niamey, the capital of Niger. Work commenced in 2014, and construction continues in Niger despite legal challenges halting work in Bénin.
In 2011, a further new line was proposed, from Ouagadougou in Burkina Faso (where it would connect with the Sitarail line from Abidjan in Côte d'Ivoire) to Niamey, a distance of 420km.
Flag image from CIA World Factbook