The University of Illinois Arboretum (160 acres (65 ha)) is a new arboretum, with gardens, currently under construction on the University of Illinois Urbana-Champaign campus.

It is located at the intersection of Florida and Lincoln Avenue, Urbana, Illinois, and open daily without charge.

The arboretum has been constructed on the university's south campus farmlands.

As of 2017, developed sections are as follows: The arboretum is the home course for the Illinois Fighting Illini men's and women's cross country teams since 2003.

There are four courses at the arboretum with 4 km, 5 km, 6 km and 8 km distances.