Denis Sassou Nguesso (wuxuu dhashey 23 Noofambar 1943) waa siyaasi reer Kongo ah oo isagu ahaa Madaxweynaha jamhuuriga Kongo ilaa 1997. Wuxuu horey u ahaa Madaxweye 1979 ilaa 1992. Xisbiga Shaqaalaha ee Kongo (PCT) muddo 12 sano ah. Cadaadis ka yimid ilo caalami ah, wuxuu soo saaray siyaasad axsaab badan 1990 ka dibna waxaa laga xayuubiyay awoodaha fulinta shirweynihii qaran ee 1991, isaga oo xafiiska sii hayey isagoo ah madaxa xafladda. Wuxuu u taagnaa sidii murashax doorashadii madaxweynenimada ee 1992 laakiin waa laga adkaaday isagoo kaalinta saddexaad galay. Sassou Nguesso wuxuu ahaa hogaamiye mucaarad shan sano ka hor inta uusan xukunka kusoo laaban dagaalkii labaad ee sokeeye (1997 --1999), kaas oo xoogaggiisa mucaaradka ay xukunka ka tuureen Madaxweyne Pascal Lissouba. Xilligii ku meelgaarka ahaa kadib, wuxuu ku guuleystey doorashadii madaxtinimada ee 2002, taasoo ay ku lug lahaayeen kaqeybgal hoose oo mucaaradka; mar labaad ayaa loo doortay doorashadii madaxtinimada ee 2009. Soo saarista dastuur cusub, oo afti loo qaaday sanadkii 2015, ayaa u suurta gelisay Sassou Nguesso in uu isu taago muddo kale. Waxaa mar labaad loo doortay doorashadii madaxtinimada ee 2016 iyadoo aqlabiyad wareegii koowaad la qabtay.