Ironwood may refer to
- Ironwood, Michigan, a city in the Upper Peninsula of the U.S. state of Michigan.
- Any particular wood that has a reputation for hardness. Usage of the name may (or may not) include the tree that yields this wood. Species involved include:
- Carpinus caroliniana — also known as American hornbeam
- Casuarina equisetifolia — Common Ironwood from Australia
- Choricarpia subargentea
- Copaifera spp.
- Eusideroxylon zwageri
- Guaiacum officinale and Guaiacum sanctum — Lignum vitae
- Hopea odorata
- Krugiodendron ferreum — Black Ironwood
- Lyonothamnus lyonii (L. floribundus) — Catalina Ironwood
- Mesua ferrea — also known as Rose Chestnut or Ceylon Ironwood, from Thailand, Laos, Vietnam, Cambodia
- Olea spp. — various olive trees
- Olneya tesota — Desert Ironwood
- Ostrya virginiana — Hop hornbeam
- Parrotia persica — Persian Ironwood
- Tabebuia serratifolia — Ipe
- Angrboda in Norse Mythology, is also known as the forest of "Ironwood"