- American Alpine Institute
 - Climbing school and guide service. - British Schools Exploring Society (BSES)@
- National Outdoor Leadership School (NOLS) (2)
- Outward Bound (16)
 Outward Bound Singapore
- Provides youths with challenging, fun, and safe outdoor activities to develop their resilience, tenacity, and team spirit.- Princeton Outdoor Action Program
- Sargent Center for Outdoor Education
- Offers teambuilding and orienteering activities, ropes course elements, hiking, biking, and canoeing.
- Sir Edmund Hillary Outdoor Pursuits Centre
- Situated on the edge of the Tongariro National Park, the camp provides education using outdoor pursuits to New Zealanders, particularly youth and those disadvantaged.
- SPARKc
- Training wing of the Outward Bound Singapore developing character, leadership, and team spirit in children through direct and purposeful experience in the outdoors.
- University of Oregon Outdoor Program
- Information on OP trips, events, outdoor conditions, links to other outdoor resources, and extensive environmental information.
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