Ouwo Moussa Maâzou (born 25 August 1988) commonly known as Moussa Maâzou, is a Nigerien professional who plays as a striker , who last played for RC Lens.
Maazou began his senior career as a player with Niger's Army club, ASFAN of Niamey. In 2005–2006 Maazou scored 17 goals. In the 2006–2007 season with ASFAN, he scored 20 goals in 34 matches. In January 2008, Belgian side Sporting Lokeren signed him. He scored six goals in his first nine matches. On 3 January 2009, Maâzou signed a contract with CSKA Moscow. The club paid Sporting Lokeren €4.8 million for Maâzou. He was immediately loaned back to Lokeren until 1 July 2009. After CSKA qualified for the round of 16 of the UEFA Cup 2008–09, he was called back from the loan and on 12 March 2009 was registered as a CSKA player. In January 2010 Maâzou left Russia, signing a six-month loan deal, with an option for a permanent move when his loan spell ends, with AS Monaco. The following season Maâzou joined FC Girondins de Bordeaux on a one-year loan, again with an option to purchase. At the end of January 2011 Maâzou returned to AS Monaco on another six-month, but after only one game injured his knee in training and would require surgery.