Holy Cross is a Catholic secondary school in St. Catharines, Ontario.

In 1993, due to overcrowding, Holy Cross relocated to the former Grantham High School building, which was shut down by the District School Board of Niagara that same year due to declining enrollment.

The team is currently coached by NLL player Mike Accursi and physical education teacher Dave Walker.

Championships: The Holy Cross hockey team has had various success in Southern Ontario play in recent years.

in 2019 the Girls varsity hockey team were crowned SOSSA champions after going undefeated.