Oncidium uniflorum

{{Short description|Species of orchid}}

{{Speciesbox

| image = Oncidium uniflorum - Edwards vol 29 (NS 6) pl 43 (1843).jpg

| genus = Oncidium

| species = uniflorum

| authority = Booth ex Lindl.

| synonyms =

• Oncidium uniflorum var. robustum Regel
• Alatiglossum uniflorum (Booth ex Lindl.) Baptista
• Kleberiella uniflora (Booth ex Lindl.) V.P.Castro & Cath.

}}

Oncidium uniflorum is a species of orchid endemic to southern and southeastern Brazil.