Miss Rio Grande do Sul is a Brazilian Beauty pageant which selects the representative for the State of Rio Grande do Sul at the Miss Brazil contest.

The pageant was created in 1954 and has been held every year since with the exception of 1990, 1993, and 2020.

The pageant is held annually with representation of several municipalities.

Since 2023, Bebeto Azevêdo has been the state director of Miss Rio Grande do Sul.

Rio Grande do Sul is the state with the most crowns in the national contest and also the state that produced the first Miss Brazil to win the Miss Universe contest, Iêda Maria Vargas of Porto Alegre.