Ironwood is a common name for a large number of woods that have a reputation for hardness. Usage of the name may (or may not) include the tree that yields this wood. Some of the species involved are:
- Acacia estrophiolata, Southern ironwood
- Androstachys johnsonii, Lebombo ironwood
- Carpinus caroliniana, American hornbeam
- Casuarina equisetifolia, Common ironwood from Australia
- Casuarinaceae (she-oaks) in general
- Chionanthus foveolatus, Pock ironwood from South Africa
- Choricarpia subargentea, Giant ironwood
- Copaifera spp., Diesel Tree, Kerosene Tree, Kupa'y, Cabismo, or Copaúva
- Diospyros blancoi, Mabolo, Velvet Apple, or Kamagong native to the Philippines
- Erythrophleum chlorostachys, Cooktown ironwood from Australia.
- Eusideroxylon zwageri, Borneo ironwood
- Guaiacum officinale, Lignum vitae
- Guaiacum sanctum, Holywood
- Holodiscus discolor, Ocean Spray or Creambrush
- Hopea odorata, White thingan, Ceylon or Malabar ironwood
- Krugiodendron ferreum, Black Ironwood
- Lophira alata, Red ironwood
- Lyonothamnus floribundus, Lyon tree
- Mesua ferrea, Rose chestnut or Ceylon ironwood or Nahar
- Nestegis apetala, Coastal maire, Broad-leaved maire or Ironwood
- Olea spp., Various olive trees
- Olneya tesota, Desert ironwood
- Ostrya knowltonii, Knowlton's hophornbeam
- Ostrya virginiana, Hophornbeam
- Parrotia persica, Persian ironwood
- Pemphis acidula, Maldivian ironwood
- Tabebuia serratifolia, Ipê, "Brazilian Walnut", Lapacho, Yellow poui
- Vepris lanceolata, The White ironwood tree of South Africa
- Xanthostemon verdugonianus, Philippine Ironwood or Mangkono, endemic to the Philippines