Nelsonioideae

{{Short description|Subfamily of flowering plants}}

{{Automatic taxobox

| image = Nelsonia canescens (4352811745).jpg

| image_caption = Nelsonia canescens

| taxon = Nelsonioideae

| authority =

| type_genus = Nelsonia

}}

Nelsonioideae[https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?lin=s&p=has_linkout&id=216689 NCBI: Nelsonioideae (retrieved 22 November 2017)] is a subfamily of plants in the family Acanthaceae, with a pantropical distribution.