姆布吉马伊（Mbuji-Mayi），是刚果民主共和国第三大城市，2010年人口约148万。是该国东中部的重心、东开赛省首府。

20世纪初，当地发现钻石矿后，矿业公司在姆布吉马伊建设矿场连职工宿舍等设施。1950年代后期有人口约39,830。1960年刚果独立后，当地人口急增。

Mbuji-Mayi (formerly Bakwanga) serves as the capital of Kasai-Oriental Province in the south-central Democratic Republic of Congo. It is the third largest city in the country, following the capital Kinshasa and second largest city Lubumbashi but ahead of Kisangani and Kananga, though the exact population is not known. Estimates ranged from a 2010 CIA Factbook estimated population of 1,480,000 to as many as 3,500,000 estimated by the United Nations in 2008.