João Ubaldo Osório Pimentel Ribeiro ComM (Itaparica, January 23, 1941 — Rio de Janeiro, July 18, 2014) was a Brazilian writer and winner of the 2008 Camões Prize. Ubaldo Ribeiro had some works adapted for television and cinema, in addition to being distinguished in other countries, such as Germany. He is the author of novels such as Sargento Getúlio, O Sorriso do Lagarto, A Casa dos Budas Ditosos, which caused controversy and was banned in some establishments, and Viva o Povo Brasileiro, the latter of which was highlighted as a samba-enredo by the samba school Império da Tijuca, during the 1987 Carnival.
