Royal Canadian Sea Cadet Corps Ajax (RCSCC Ajax) is a youth development program based in Guelph, Ontario, dedicated to building leadership, citizenship, and seamanship skills in young Canadians aged 12–18. As part of the national Sea Cadet program, Ajax provides structured training, hands‑on maritime experiences, and opportunities for personal growth in a supportive, disciplined environment.

Founded as Corps 89 “Ajax,” the unit carries a proud naval heritage inspired by HMCS Ajax and Canada’s long-standing maritime traditions. Over the years, RCSCC Ajax has grown into a respected local corps known for its strong community involvement, high training standards, and commitment to developing confident, capable youth. Cadets participate in sailing, drill, fitness, ceremonial events, and summer training programs across Canada, continuing a legacy of service and excellence that has shaped generations.