The Tangipahoa were a Native American tribe that lived in Louisiana, just north of Lake Pontchartrain. It is from them that the modern town of Tangipahoa, Louisiana gets its name.
The Tangipahoa were closely related to the Acolapissa. They reunited with the Acolapissa after that tribe moved west from its former home in Mississippi and have since merged with the Houma along with the rest of the Acolapissa.