Xanthooestrus

{{Short description|Genus of flies}}

{{Automatic taxobox

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| taxon = Xanthooestrus

| authority = Villeneuve, 1914{{cite journal |last1=Villeneuve |first1=J. |title=Sur quatre formes nouvelles se rapportant aux "Oestridae dubiosae B. B." |journal=Annales Historico-Naturales Musei Nationalis Hungarici |date=1914 |volume=12 |pages=435–442 |url=https://www.biodiversitylibrary.org/item/254702#page/451/mode/1up |access-date=7 August 2023}}

| type_species = Xanthooestrus fastousos

| type_species_authority = Villeneuve, 1914

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Xanthooestrus is a genus of flies in the family Tachinidae.{{cite web |last1=O’Hara |first1=James E. |last2=Henderson |first2=Shannon J. |first3=D. Monty |last3=Wood |title=Preliminary Checklist of the Tachinidae (Diptera) of the World|url=http://www.nadsdiptera.org/Tach/WorldTachs/Checklist/Tachchlist_ver2.1.pdf |website=Tachinidae Resources |access-date=1 July 2023 |date=5 March 2020}}