Xanthostemon sebertii

{{Short description|Extinct species of flowering plant}}

{{speciesbox

|image =

|status = EX

|status_system = IUCN2.3

|status_ref = {{cite iucn |author=Jaffré, T. et al. |date=1998 |title=Xanthostemon sebertii |volume=1998 |page=e.T31311A9623853 |doi=10.2305/IUCN.UK.1998.RLTS.T31311A9623853.en |access-date=17 November 2021}}

|genus = Xanthostemon

|species = sebertii

|authority = Guillaumin

}}

Xanthostemon sebertii was a species of plant in the family Myrtaceae. It was endemic to New Caledonia.