M'Baye Hamady Niang (born 19 December 1994) is a professional footballer who plays as a forward for Serie B club Sampdoria.

[5] After hearing of the player through word of mouth, Niang was spotted by professional club Caen scouts Laurent Glaize and David Lasry.

[3] Despite the claim, the scouts continued to pursue Niang, who was also being linked to other professional clubs in France, such as Lille and Paris Saint-Germain.

[16] In the team's next match against Rennes, Niang appeared as a substitute and scored the equalizing goal four minutes after coming on.

[21] Despite the contract issues, Niang remained a Caen player and made his season debut on 13 August 2011 in a 2–1 win over Sochaux.

[29] On 13 December 2012, in the Coppa Italia 5th Round game against Reggina, Niang came on as a substitute and scored with the match ending in a 3–0 win.

In January 2015, Niang was loaned to fellow Italian club Genoa in the transfer window for the remainder of the season.

Niang suffered a fractured metatarsal when Milan faced Bayern Munich in the pre-season Audi Cup tournament, causing him to miss the start of 2015–16 season.

He then scored his first brace in Serie A for Milan as the team cruised past Sampdoria with a 4–1 win on 28 November 2015 at the San Siro.

[32] In January 2016, it was reported that Milan had rejected a €16 million bid from English club Leicester City for Niang.

After suffering a drop in his performance, in January 2017, Niang was sent on loan to English Premier League team Watford.

[37] He opened the scoring for Rennes against Olympique Lyonnais in the semi-finals of Coupe de France on 2 April 2019 as they were eventual 3–2 winners after a back and forth game to secure their first appearance in the final since 2014.

[38] the Niang converted his penalty kick as Rennes upset league champions PSG in the final of the competition on 27 April, as the club won the cup for the first time since 1971.

[39] On 24 May 2019, the final day of the 2018–19 Ligue 1 campaign, Niang scored twice to bring his league tally to 11 goals on the season, as Rennes defeated Lille 3–1.

[43] On 7 February 2021, Niang joined Al-Ahli Saudi FC on a six-month loan deal with an option to buy.

[46] On 31 January 2024, Niang signed with Serie A club Empoli until the end of the season, with a conditional option to extend.

[47] In half-a-season, he made 14 league appearances and scored 6 goals, including the one against Roma at the 93rd minute of the final matchday of the competition, which helped the team seal 2–1 victory, earn 3 more points, and finish in the 17th place, avoiding relegation at the very last moment.

[5] In December 2009, he earned his first international call-up at under-16 level under coach Patrick Gonfalone for friendly matches against Belgium.

At under-17 level, Niang was among Gonfalone's first call-ups and made his debut at a European tournament in Serbia in the team's opening group stage match against the hosts.

Due to being born in France to Senegalese parents, Niang is eligible to represent the Senegal national team at international level.

In May 2011, Senegalese media reported that Niang was named to the Senegal under-23 team to participate in 2011 CAF U-23 Championship qualification matches in June 2011.

[68] In November 2012, Niang was banned from representing the France national team until 31 December 2013 for visiting a nightclub while breaking a night time curfew.

[69][70] On 7 October 2017, Niang made his debut with Senegal against Cape Verde, in 2018 FIFA World Cup qualification match won 2–0.