Kalthouma Nguembang yatlr siyasan ƙasar Chadi ce, wacce ta ka sance memba na farkon a kungiyar Progressungiyar Cigaban Chadi (PPT). An zabe ta a Majalisar Dokokin Kasar Chadi a shekarar 1968, amma daga baya François Tombalbaye ya kulle ta wanda ya zarge ta da shirya masa makarkashiya. Nguembang an haife ta a Chadi wani lokaci a farkon ƙarni na ashirin, ba a san ranar haihuwarta ba kuma ba a san komai game da rayuwarta ta farko ba. Koyaya sananne ne cewa ɗaya daga cikin usan uwan nata shine Félix Malloum, wanda ya zama shugaban Chadi daga 1975 zuwa 1978. A cewar rahotanni daga gwamnatin Faransa mai mulkin mallaka, Nguembang ya shiga Jam’iyyar Cadi mai ci gaba da wuri. Shugaban jam'iyyar CPP, Gabriel Lisette, ya amince da ita a matsayin muhimmiyar mace a farkon shekarun jam'iyyar. A cikin 1949 François Tombalbaye shima ya yaba da kokarin Nguembang a cikin wani jawabi a N'Djamena. Ta karfafa 'yan Chadi ta Sara mutane, to wanda ta kasance, to kuri'a domin CPP kuma yi magana fita neman yancinsu.