Unity Christian High School is a member of the Michigan High School Athletic Association (MHSAA) and the Michigan Interscholastic Horsemanship Association (MIHA), and competes in the Ottawa-Kent Conference Green Division.

Boys are offered soccer, football, baseball, basketball, bowling, tennis, track and field, cross country, golf, wrestling, swimming, ice hockey (cooperative team with Hudsonville High School), and lacrosse (cooperative team with Holland Christian High School).

Girls are offered soccer, softball, basketball, bowling, golf, track and field, cross country, tennis, volleyball, and swimming.

Unity Christian's equestrian, bowling, softball, and track and field teams have also been successful in state competitions.

In 2008, the football team lost a first round playoff game to the eventual state champion, Holland Christian.