Lignum

Lignum is Latin for wood and may refer to:


 * Gmelina lignum-vitreum, plant endemic to New Caledonia
 * Lignum, common name of Muehlenbeckia florulenta, plant native to inland Australia
 * Lignum Crucis, remnants of the True Cross
 * Lignum Ltd, see John C. Kerr
 * Lignum vitae, trade wood from trees of the genus Guaiacum
 * Lignumvitae Key, island in the Florida Keys
 * Vitex lignum-vitae, Australian rainforest tree
 * Lignum, Virginia, unincorporated community in the United States