Rhadinaea calligaster

{{Short description|Species of snake}}

{{speciesbox

| image =

| image_caption =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author1=Batista, A. |author2=García Rodríguez, A. |author3=Saborío, G. |author4=Vargas Álvarez, J. |author5=Acosta Chaves, V. |date=2013 |title=Rhadinaea calligaster |volume=2013 |page=e.T203583A2768920|url=https://www.iucnredlist.org/species/203583/2768920 |access-date=20 November 2021}}

| genus = Rhadinaea

| species = calligaster

| authority = (Cope, 1875)

}}

Rhadinaea calligaster, the thick graceful brown snake, is a species of snake in the family Colubridae. It is found in Costa Rica and Panama.