Wanjira Mathai (an haife ta a watan Disamba 1971) 'yar ƙasar Kenya ce mai fafutukar kare muhalli kuma mai fafutuka. Ita ce mataimakiyar shugaban kasa kuma darektan yanki na Afirka a Cibiyar Albarkatun Duniya, da ke Nairobi, Kenya. A cikin wannan rawar, ta ɗauki batutuwan duniya da suka haɗa da sare itatuwa da samar da makamashi. An zaɓe ta a matsayin ɗaya daga cikin ƴan Afirka 100 mafi tasiri da New African Magazine ta yi a shekarar 2018 saboda rawar da ta taka a matsayin babbar mai ba da shawara a Cibiyar Albarkatun Duniya da kuma yaƙin neman zaɓen da ta yi na dasa bishiyoyi sama da miliyan 30 ta hanyar aikinta a Motsin Green Belt. An haifi Mathai kuma ta girma a Kenya. Mahaifiyarta, Wangari Maathai, 'yar gwagwarmaya ce ta zamantakewa, muhalli da siyasa kuma mace ta farko ta Afirka da ta lashe kyautar Nobel ta zaman lafiya, a 2004. Mathai dalibi ce a makarantar sakandaren mata ta gidan gwamnati da ke Nairobi. Bayan ta kammala makarantar sakandare ta koma birnin New York don halartar kolejojin Hobart da William Smith inda ta karanci ilmin halitta kuma ta kammala a 1994.