Prep's Athletic Department fosters an atmosphere that enables the student-athlete not only to be coached in the intricacies of his individual sport, but to learn the values and lessons of life that are closely associated with the Ignatian experience.

Varsity, JV and freshmen teams are fielded in football, basketball, lacrosse and soccer. Varsity and JV teams are offered in baseball, golf, track and field, cross country, swimming, wrestling, tennis, indoor track, rugby, hockey. and fencing.

Georgetown Prep has 33 teams competing throughout the school year during the fall, winter and spring seasons:

Fall: Football, soccer, cross country

Winter: Swimming, basketball, wrestling, hockey, and indoor track

Spring: Baseball, tennis, golf, lacrosse, track, rugby, fencing

Prep competes in the IAC for most sports. Following the 2004 fall season, the IAC headmasters voted Prep out the conference for football due to Prep's excellence and what the headmasters felt was an uncompetitive balance in the league. Prep now competes in the A division of the MIAA with Loyola, Gilman, Mt. St. Joe's, Calvert Hall, and McDonogh. Other interscholastic sports outside of the IAC are rugby and fencing.