The Original Ninfa's on Navigation is a popular Mexican restaurant located at 2704 Navigation Boulevard in Houston, Texas. The restaurant serves both Tex-Mex and Mexican cuisine. The Original Ninfa's was started by Ninfa Rodríguez Laurenzo, a Mexican-American woman, in a tortilla factory. Ninfa Laurenzo became a full-time restaurateur and the tortilla factory closed. Mama Ninfa is widely credited with popularizing the fajita among Houstonians.

Tex-Mex cuisine is a regional American cuisine that originates from the culinary creations of Tejano people. It has spread from border states such as Texas and others in the Southwestern United States to the rest of the country. It is a subtype of Southwestern cuisine found in the American Southwest.