August 5, 1945|
New York City, New York,
|Residence||New York City|
|Occupation||Art dealer, racehorse owner/breeder|
|Parents||Daniel Wildenstein & Martine Kapferrer|
|Relatives||Alec Wildenstein (brother)|
The son of Daniel Wildenstein, a leading art dealer and race horse owner and breeder in France, his family had to flee their country following the German occupation of France during World War II and make their way to the United States where Guy would be born. He is a member of the Assembly for French Expatriates (AFE). 
After his father's death in 2001, Wildenstein assumed managing control of the art business, leaving brother Alec to concentrate mainly on the horse racing and breeding operations. Alec Wildenstein died in 2008 leaving Guy in charge of both businesses.
Among Wildenstein's art businesses is the Wildenstein & Company art gallery at 19 East 64th St.
- Times Newspapers online June 20, 2009 article titled "Feud over family fortune and $10bn art collection"