Al Seyni Ndiaye (born 31 December 1989) is a Senegalese beach soccer player who plays as a goalkeeper. He has been part of the Senegal national team since its formation. Ndiaye is currently captain of Senegal.

He has appeared at eight editions of the FIFA Beach Soccer World Cup. Regionally, at the Africa Beach Soccer Cup of Nations, he has been a seven-time champion and has also won the best goalkeeper award on seven occasions. Beach Soccer Worldwide (BSWW) have called him "Africa's best beach soccer goalkeeper", whilst teammate Raoul Mendy has called him the "key player in every match" for Senegal.

Honours.