Roche-a-Cri Petroglyphs, also known as the Friendship Glyphs, are a historic archaeological site in Roche-a-Cri State Park near Friendship, Wisconsin, preserving Oneota rock art carved into stone. The carvings, mostly petroglyphs of birds, canoes, and geometric designs, are among the notable surviving expressions of Indigenous imagery in the area. Their significance rests both in the imagery and in their survival despite vandalism by soldiers and settlers from 1845 into the 1880s, including damage linked to Company D of the Wisconsin 1st Cavalry Sharpshooters in 1861. They were added to the National Register of Historic Places in 1981 and remain a protected historic place.