Yo soy Betty, la fea (English: I am Betty, the Ugly one), often referred to simply as Betty, la fea, is a Colombian telenovela created by Fernando Gaitán. It aired from 25 October 1999 to 8 May 2001 on RCN. Ana María Orozco stars as the titular character, alongside Jorge Enrique Abello, Natalia Ramírez, Lorna Cepeda, Luis Mesa and Julián Arango.

It is the first telenovela to have been remade worldwide and has been regarded as bringing the telenovela to new levels of success. The story's appeal to global audiences has been credited to it being centered around the life of an unattractive character rather than that of a typical attractive character.