Aztalan State Park

	Aztalan
	U.S. National Register of Historic Places
	U.S. National Historic Landmark
	Steps on the eastern face of the largest platform mound, Aztalan State Park
	Location within Wisconsin Location within the United States
Location	Near Lake Mills on WI 89, Jefferson County, Wisconsin
Nearest city	Lake Mills, Wisconsin
Coordinates	43°03′56″N 88°51′46″W / 43.065556°N 88.862884°W
NRHP reference No.	66000022
Significant dates
Added to NRHP	October 15, 1966
Designated NHL	July 19, 1964

1855 map of Aztalan historical site; north is to the right.

Aztalan State Park is a state park in Jefferson County, Wisconsin, United States. Established in 1952, it was designated a National Historic Landmark in 1964 and added to the National Register of Historic Places in 1966. The park covers 172 acres (70 ha) along the Crawfish River.

Aztalan is the site of an ancient Mississippian culture settlement that flourished during the 10th to 13th centuries. The indigenous people constructed massive earthwork mounds for religious and political purposes. They were part of a widespread culture with important settlements throughout the Mississippi River valley and its tributaries. Their trading network extended from the Great Lakes to the Gulf Coast, and into the Southeast of the present-day United States.