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.

The Wisconsin State Assembly is the lower house of the Wisconsin Legislature. Together with the smaller Wisconsin Senate, the two constitute the legislative branch of the U.S. state of Wisconsin.