Robin Joseph Vos is an American businessman and Republican politician and the 79th speaker of the Wisconsin State Assembly, serving in that role since 2013. He has been a member of the Assembly since 2005, representing most of the southern half of Racine County. Vos is also president of the National Conference of State Legislatures.

The Speaker of the Wisconsin State Assembly is the presiding officer of the Wisconsin State Assembly, the lower house of the Wisconsin Legislature. Article IV of the Constitution of Wisconsin, ratified in 1848, establishes the legislature and specifies the election of officers. The role and responsibilities of the speaker are defined in the Assembly Rules, originally in Rule 1, and also, under the present rules, Rule 3.