Niseko Adventure Center  and its founder, Ross Findlay, is one of the early arrivals to put the Niseko area on the international map. NAC offers white water rafting, river kayaking and duckies, mountain biking, sea kayaking, climbing and trekking in the warmer months, and ski instruction, back-country ski tours, snow cat tours, snowshoeing and cross-country skiing in the wintertime.

Scott Adventure Sports  has over ten years in Niseko offering white water rafting, kayaking, fishing, mountain biking, horseback riding and trekking tours in the spring and summer and ski/snowboard lessons, snowshoeing and snowmobiling in the winter.

The Niseko Outdoor Adventure Sports Company (NOASC)  offers a similar menu of rafting, kayaks and duckies as well as trekking, rappelling, mountain biking and mountain boarding (think of mutant off-road skateboards) and ski/snowboard instruction, backcountry tours and snowcat rides in the winter.