Liziane Bayer da Costa (born 24 January 1981) is a Brazilian politician and pastor.

She has spent her political career representing her home state of Rio Grande do Sul, having served as state representative since 2019.

[1] Bayer is a pastor of the Pentecostal church Igreja Internacional da Graça de Deus.

[2] Bayer was elected to the Legislative Assembly of Rio Grande do Sul in 2015.

[3] In the 2018 Brazilian general election Bayer was elected to the federal chamber of deputies from her state.