Club de Rugby Ateneo Inmaculada (CRAI) is an Argentine rugby union and field hockey club, located in Santo Tomé, Santa Fe Province.

Ateneo Inmaculada is member of the Unión Santafesina de Rugby and currently plays in the Torneo del Litoral.

One of Santa Fe's youngest clubs, Ateneo Inmaculada reached the final of the Torneo del Litoral in 2007.

Until this donation was effective, CRAI moved to different fields to play its home games: Club Excursionista, Regimiento 12 and El Quilla were some of them, so the club was nicknamed El Gitano (The Gypsy), because of the character of nomad that those people have.

Two years later the CRAI opened a section for this sport and the different categories are incorporated to the club.