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.

[1][2] 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.