Ismaila Lassissi, sometimes also spelled Isimaila Lassissi (born 11 September 1969), is a former Ivorian rugby union footballer. He played as a flanker and as a number eight.
He played for Burotic Abidjan, in Côte d'Ivoire and for Stade Rodez Aveiron and Castres Olympique, in France. He had 8 caps for Côte d'Ivoire, from 1993 to 1995, without ever scoring. He was a member of the Ivorian Squad at the 1995 Rugby World Cup finals, playing in all the three games. Lassissi has not since been selected for his National Team.