Bouygues S.A. is a French engineering group headquartered in the 8th arrondissement of Paris, France. Bouygues is listed on the Euronext Paris exchange and is a blue chip in the CAC 40 stock market index. The company was founded in 1952 by Francis Bouygues and has been led by his son Martin Bouygues since 1989. Martin's older brother, Olivier Bouygues, is a board member.

The 8th arrondissement of Paris is one of the 20 arrondissements of the capital city of France. In spoken French, the arrondissement is colloquially referred to as le huitième.