Ulmus alata, the winged elm or wahoo, is a small- to medium-sized deciduous tree endemic to the woodlands of the southeastern and south-central United States.

The tree is occasionally considered a nuisance as it readily invades old fields, forest clearings, and rangelands, proving particularly difficult to eradicate with herbicides.

At the beginning of the 19th century, the tree was one of the three American elm species cultivated in ornamental plantations in Britain,[9] but is now rare there.

[10] On the silty uplands of the Mississippi Delta, Ulmus alata can attain 27 m (89 ft) in height, although the trunk diameter rarely exceeds 60 cm (24 in) d.b.h.

[12][3] Ulmus alata is of minimal commercial significance, its hard timber considered no more remarkable than that of other American elms, and of limited use because of the commonly small size of the trees.