Miss Brasil 1998 was the 44th edition of the national beauty pageant, held on 1998-04-17 at Tom Brasil in São Paulo, Brazil. Twenty-six states and the Federal District competed. Michella Marchi of Mato Grosso do Sul won, the first from her state to claim the title. The outgoing queen was Nayla Micherif (Miss Brasil 1997). The runner-up represented Brazil at Miss World 1998.