Quesnay
Quesnay is a family name that may refer to:
- Abraham Quesnay (1666–1726), Huguenot architect
- François Quesnay (1694–1774), French doctor and economist
- Pierre Quesnay (1895–1937), French banker
- Robert François Quesnay de Saint-Germain (1751–1805), French politician, economist and lawyer