Al-Nilin Mosque or The Mosque of the two Niles, is a Musjid in Omdurman, Sudan. It is located on the western banks of the Nile river, just opposite to the confluence of the two Niles. It was built in the 1970s during the Nimeiry era of Sudan, and since then remains one of the fine architectural religious venues in the country. The mosque was inaugurated on Friday, 3 Muharram 1405 H corresponding to 24 September 1984.

It is located on the confluence of the two rivers, the Blue Nile and the White Nile at the entrance of Omdurman. The location of Al- Nilin Mosque is the closest location to the Nile and is therefore considered the largest Musjid on the Nile from its source to its mouth in the Mediterranean.