Grand-Saconnex

Infobox Swiss town
subject_name = Grand-Saconnex
municipality_name = Grand-Saconnex
municipality_type = municipality
imagepath_coa = GrandSaconnex-coat of arms.svg|pixel_coa=


languages = French
canton = Geneva
iso-code-region = CH-GE
district = n.a.
lat_d=46|lat_m=14|lat_NS=N|long_d=06|long_m=07|long_EW=E
postal_code = 1218
municipality_code = 6623
area = 4.37
elevation = 452|elevation_description=
population = 10607|populationof=2007
website = www.grand-saconnex.ch
mayor = Pierre Gardet|mayor_asof=|mayor_party=
mayor_title = |list_of_mayors =
places =
demonym =
neighboring_municipalities= Bellevue, Ferney-Voltaire (FR-01), Geneva ("Genève"), Meyrin, Pregny-Chambésy, Vernier
twintowns = Carantec (France)|

Grand-Saconnex is a municipality of the Canton of Geneva, Switzerland. It is located just to west of the city of Geneva and forms part of the greater Geneva area. Several international organizations and permanent missions to the United Nations are located in Grand Saconnex. Consequently, the population of Grand Saconnex is one of the most diverse in Switzerland, representing many nationalities.

Grand Saconnex is twinned with the town of Carantec in Brittany in western France.