Abilene & Smoky Valley Railroad - Offers public excursion train rides May through October, private charters and school tours April through December, and seasonal dinner trains.
Abode Himalayan Adventure Treks Nepal - Offers trekking and mountaineering, whitewater river rafting, sight seeing, and jungle safaris in Nepal, Tibet, Bhutan, and Sikkim.
Absolute South Pacific - Tours to the South Pacific including Australia, New Zealand, and Fiji.
Acacia Africa - Safari adventures throughout the African continent.
Academic Tours - Offering cultural and archaelogical tours in Europe.
Academic Travel Services - Specializes in educational and performance tour packages in the United States.
Acadian Lines - Scheduled bus service throughout Atlantic Canada; charter service throughout North America.
Acadian Whale Adventures - Offers daily excursions aboard a high-tech catamaran in Bar Harbor, Maine to see Humpback, Finback, and Minke whales, dolphins, and more.
Accent on Africa - Specializes in custom safaris and cultural tours throughout Africa.
Access Adventure Travel - Offers instructional sports tours worldwide that cater to all abilities. Sports include snowboarding, skiing, surfing, mountain biking, kayaking, and rock climbing.
Access Uganda Tours - Offers a range of safaris in Uganda, from three-day weekends to 12 days safaris, and bird watching trips throughout Africa.
Accessible Canadian Adventures (ACA) - Designs, coordinates, and arranges hunting and fishing adventures specifically for men and women with physical disabilities.
Accessible Italy - Offers tours for groups and individuals throughout Italy for the disabled.
Ace Adventure - Provides outdoor training and development programmes through climbing, abseiling, adventure treks, team building, and more.
Ace India Tours - Offers tour packages to major travel cities of Sri Lanka.
Ace Ocoee Funyaks - Offers whitewater funyak trips down the Ocoee River.
ACE Study Tours - Subjects include art, archaeology, history, music, drama, geology, and wildlife.
Ace Whitewater - Whitewater river rafting outfitter on the New and Gauley Rivers in West Virginia. Also operates a 1400 acre resort with climbing, horses, and mountain biking.
Acharya Hotels Nepal - Offers tour packages and features hotels in Kathmandu, Pokhara, Chitwan, and Nagarkot.
Acorn Activities - Offers activity breaks and holidays, corporate events, and Stag and Hen parties that run throughout the U.K. Activities include ghost tours, Formula One racing, air sports, and art programs.
Action Belize - Arranges fishing, diving, hotels, sightseeing, and exploring trips in Belize.
Action Divers - Scuba, snorkeling, and water sports in Puerto Galera.
Action Factory - Offers trips throughout Asia and Europe.
Action Jackson Sports Tours - Offers race tours to most Winston Cup events including tickets, lodging, and transportation.
Action Tours - Provides off-roading tour adventures in the Las Vegas area.
Action Trips - Travel reference guide to active, participatory trips and tours worldwide.
Action Vacances - Offers holidays in France for ages 18-40 yrs, including school and student skiing trips.
Action Whitewater Adventures - Whitewater raftingtrips on Idaho's Main Salmon, Middle Fork, Grand Canyon, American, Kern, Green, Tuolumne, and Rogue rivers.
Active Adventures - Provider of holidays including diving, windsurfing, surfing, kitesurfing, and multi-activity adventures for individuals, families, and team building. Serving Europe, Spain, and Africa.
Active Alpine Excursions - Winter and summer tours including canyoning, snowboarding, scuba, paragliding, and other vacations in Salzburg and Munich.
Active China Tibet Tours - Offers various package and adventure tours to Tibet, Kahm Amdo, Sichuan, Yunnan, Western China as well as other areas of China.
Active Culture Tours - Biking, hiking, and trekking tours in China and Tibet that focus on local history and culture.
Active New Zealand - Runs hiking, sea kayaking, and biking trips in New Zealand and Australia.
Active Scotland - Official site of the Scottish Activity Holiday Association.
Active World Adventures - Adventure and extreme sports directory. Search for sports clubs, tour operators, centers, guides, and more.
Actividayz - Offers cooking classes, walking tours, and other alternative one-day activities throughout Italy.
Activities Abroad - U.K. based adventure and activity holiday operator offering a range of European holidays for adults and families.
Activity Holidays - Learn to sail and skipper a yacht whilst on flotilla in Greece, Croatia, or Turkey. Shore-based accommodation also available with sailing courses and dayboat hire.
Activity Holidays - Offering groups of up to 30 people a range of activities with hotel, self-catering, or luxury country house accommodations in Tyrone, Northern Ireland.
Acute Angling - Guided trips to South American destinations for Peacock Bass and other exotic freshwater species.
Ad Hoc Voyage - Features adventure trips to Rajasthan
Adams Lodge - Hunting and fishing outfitter in the Flattops Wilderness Area and White River National Forest. Guided and unguided elk hunts, trail rides, wilderness camping.