Nganguyousuf Mulumbu (born 25 January 1987) is a Congolese professional footballer who plays as a midfielder for Championnat National club Orléans.

[4] On 22 October 2006, he made his Ligue 1 debut under head coach Guy Lacombe, at 19 years and 10 months in a match against Auxerre.

[7] It was reported by the French media on 26 January 2009 that he joined Premier League team West Bromwich Albion on a trial basis.

On 2 February 2009, the January transfer deadline day, he joined them on loan with a view to a permanent deal at the end of the season.

Mulumbu's first term at The Hawthorns was interrupted by injuries and he had to wait until April to make his Premier League debut, coming on as a sub in a 2–2 draw at Portsmouth.

[9] On 15 March 2014, Mulumbu scored a crucial winner for West Brom in a 2–1 victory against Swansea City at the Liberty Stadium, giving Pepe Mel his first win as head coach.

[11] On 3 August 2015, Norwich announced that Mulumbu suffered a broken metatarsal in a friendly against Brentford which would require surgery and sideline him for several weeks, ruling him out of the start of the season.

[12] He would finally make his debut on 27 October in a League Cup game against Everton, which Norwich lost on penalties after a 1–1 draw.

[20] Mulumbu was loaned back to Kilmarnock on 31 January 2019, until the end of the 2018–19 season,[21] and played 12 times in his second spell with the Ayrshire club.

[27] He left the club as his contract expired in August 2022, after finishing third in the national championship and putting in strong performances as a key player in the team.

On 23 September 2011, he retired from international duties, quoting "numerous problems we were facing with some authorities within the DR Congo Football Federation".