Gaúcho (Portuguese pronunciation: [ɡaˈuʃu]), more rarely called Sulriograndense, is the Brazilian Portuguese term for the characteristic accent spoken in Rio Grande do Sul, Brazil's southernmost state, including its capital, Porto Alegre.

Its phonology is heavily similar to Rioplatense Spanish, including its characteristics of the speaking syllabic rhythm, use of L-vocalization in the syllable coda, and little use of nasal vowels, basically restricted to the monophthong /ɐ̃/ and the diphthongs /ɐ̃w̃, õj̃/.

In the western and some central varieties there is the absence of vowel reduction with word-final ⟨e⟩ and ⟨o⟩ (for example, leite is /ˈlejte/ instead of /ˈlejt(ʃ)i/ and tudo is /ˈtu.do/ instead of /ˈtu.du/).

The "hard" rhotic usually registers in western varieties as [r] medially and [ʁ] initially or following /l/, /s/, /n/ or /m/.

Although finally in eastern varieties, due to influence from Paulistano, it is sometimes realised as [ɹ].