Swed Asia Travel
- Information on trekking and mountaineering, whitewater river rafting, sight seeing, and jungle safaris.
- http://www.abodehimalaya.com/

Snow Leopard Trek Ltd.
- Trekking options in popular and remote areas of the Himalayas. Also arranges trips for Tibet, Sikkim and Ladakh.
- http://www.snowleopardtreks.biz

Sherpa Nippon Treks
- Features a company profile and an overview of trekking and tour services.
- http://www.sherpanippon.com/

Skyline Treks and Expeditions
- Information on trekking, mountaineering, rafting, jungle safari, and other options in the Himalayas.
- http://www.skylinetreks.com/

Sundar Himali Treks (P) Ltd
- Offers treks and expeditions in Nepal. Contains a region-wise overview of tourist destinations.
- http://www.south-asia.com/magicmountain

Sea and Sky Tours (P) Ltd
- Contains information about the company and detailed tour itineraries and travel information.
- http://www.seanskytours.com/

Sanctuary Treks
- Features a profile, briefs on services, and a searchable travelling database along with daily news and photo gallery.
- http://www.nepaltreksinfo.com/

See-Nepal (P ) Ltd
- Includes listings of team members and information on the various trekking programs.
- http://www.see-nepal.com/

Sherpa Majority Treks and Expedition Pvt. Ltd.
- Information on trekking trips and tours. Extension trips to Tibet and Sikkim also provided.
- http://www.sherpamt.com/

Scenic Adventure
- Holiday options and itineraries with information on service provider.
- http://www.scenicadventure.com.np/

Sachin Adventures
- Itineraries and description of trekking in the Himalayan region with a profile of the guide.
- http://www.holidayinhimalayas.com/

Sherpa Shangri La Treks and Expeditions
- Adventure treks, mountaineering, fixed deparure programs and other tours in the Himalayan region.
- http://www.shangrilatrek.com/

Snow Waves Mountain Trekking Pvt. Ltd.
- Information on adventure tours in the region including Bhutan, Sikkim and Tibet.
- http://www.snowmount.com/

Sunrise Trekking Pvt. Ltd
- Provides trekking, climbing, sightseeing and outdoor adventures. Also offers air, bus and train ticketing service.
- http://www.sunrisenepal.com/

South Asia Trekking (P) Ltd
- Trekking and mountaineering information with other adventure activities. Navigable in English and French languages.
- http://www.southasiatrek.com/

Sherpa Brothers Treks and Expeditions
- Offers trekking, rafting, safaris and sight-seeing tours in the country and to Bhutan and Tibet. Contains information about the company and services offered.
- http://www.sherpabrotherstreks.com/