| Type: | Bishop |
| Arnaldo Ribeiro | |
| Archbishop of Ribeirão Preto | |
| Church: | Roman Catholic Church |
| Archdiocese: | Ribeirão Preto |
| See: | Ribeirão Preto |
| Appointed: | 28 December 1988 |
| Term Start: | 28 December 1988 |
| Term End: | 05 April 2006 |
| Predecessor: | Romeu Alberti |
| Successor: | Joviano de Lima Júnior, S.S.S. |
| Ordination: | 13 March 1954 |
| Ordained By: | Antônio dos Santos Cabral |
| Consecration: | 27 December 1975 |
| Consecrated By: | João Resende Costa, S.D.B. |
| Rank: | Archbishop |
| Birth Name: | Arnaldo Ribeiro |
| Birth Date: | 7 January 1930 |
| Birth Place: | Belo Horizonte, Minas Gerais, Brazil |
| Death Place: | Belo Horizonte, Minas Gerais, Brazil |
Arnaldo Ribeiro (January 7, 1930 - December 15, 2009) was the Roman Catholic Archbishop of the Roman Catholic Archdiocese of Ribeirão Preto, Brazil.
Ordained to the priesthood on March 13, 1954, in the Archdiocese of Belo Horizonte, Ribeiro was named auxiliary bishop of the Belo Horizonte Archdiocese on November 6, 1975, and was ordained bishop on December 27, 1975. On December 28, 1988, Ribeiro was named Archbishop of the Ribeirão Preto Archdiocese; he retired on April 5, 2006.