Grégoire Lascubé (born Saint-Pée-sur-Nivelle, 3 April 1962) is a former French rugby union player.
Lascubé played for Biarritz Olympique and SU Agen, where he won the French Championship, in 1987/88, being runners-up in 1989/90, and the Cup of France in 1991/92.
His first game was at the 15-9 win over Scotland, at 19 January 1991, aged 28 years old, for the Five Nations Championship.
He played all the four games at the 1991 Five Nations Championship, being selected for the 1991 Rugby World Cup, where he played four games.
This biographical article relating to French rugby union is a stub.