Boissy-sans-Avoir

{{Infobox French commune

|name = Boissy-sans-Avoir

|commune status = Commune

|image = Boissy-sans-Avoir Mairie.JPG

|caption = Town hall

|image coat of arms = Blason ville fr Boissy-sans-Avoir (Yvelines).svg

|arrondissement = Rambouillet

|canton = Aubergenville

|INSEE = 78084

|postal code = 78490

|mayor = Grégoire Corby{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|publisher=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=4 May 2022|language=fr}}

|term = 2020–2026

|intercommunality =

|coordinates = {{coord|48.8211|01.7944|format=dms|display=inline,title}}

|elevation m = 95

|elevation min m = 77

|elevation max m = 116

|area km2 = 3.96

|population = {{France metadata Wikidata|population_total}}

|population date = {{France metadata Wikidata|population_as_of}}

|population footnotes = {{France metadata Wikidata|population_footnotes}}

}}

Boissy-sans-Avoir ({{IPA|fr|bwasi sɑ̃z‿avwaʁ}}) is a commune in the Yvelines department in north-central France.

It is the burial place of actress Romy Schneider (1938–1982) and her son David (1966–1981).