The Legislature of San Luis (Spanish: Legislatura de la Provincia de San Luis) is the local legislature of the Argentinian province of San Luis. It is a bicameral body, comprising the 43 members of the Chamber of Deputies of San Luis, and the Senate of San Luis with 9 members. It is one of eight bicameral legislatures in the country.^[1][2]

Provincial legislature of San Luis
Type
Type	Bicameral
Houses	Upper house: Senate of San Luis Lower house: Chamber of Deputies of San Luis

It is elected by a general provincial first-past-the-post voting (Senate), proportional representation (Chamber), and renewed every 2 years by electing a new half of each house. Each representative serves a four-year term. The Provincial Constitution denotes its legislative powers.

The Legislature meets in the provincial capital.