Kalthouma Nguembang was a Chadian politician, born in the early 1900s.
In 1964 she visited the United States with Bourkou Louise Kabo.
She was arrested in 1973 for purportedly plotting against François Tombalbaye, the dictator of Chad. At the time she was the president of the women's section of the party then in power, Parti Progressiste Tchadien. In February 1975 she was sentenced to seven years in jail. A new trial was being prepared for her when Tombalbaye's government was overthrown later in 1975.
Also, Tombalbaye's authorities had decided Fatimé Dordji was an enemy of the state because she had named one of her children after Nguembang, though Dordji claimed she had named her child before Nguembang's arrest. Dordji was detained, let go shortly before her daughter was born, then imprisoned for 21 months.