| SurGal Clinic | Czech Republic | | Czech Republic |
| Surgeon and Safari | South Africa | | South Africa |
| Surgery Abroad International | Belgium, Croatia, Cyprus, Hungary, India, Greece, Poland, Czech Republic, Spain, Turkey | Dentistry | United Kingdom |
| Surgery Getaways | Thailand | Cosmetic surgery, Dentistry | Australia |
| Surgery Host (Servicio Medico de Tramites e Implantes S C) | Mexico | Cosmetic surgery | Mexico |
| Surgery in Greece | Greece | Cosmetic surgery, Dentistry | Greece |
| Surgery in Greece | Greece | Cosmetic surgery | Greece |
| Surgery in Malta | Malta | Cosmetic surgery, Dentistry, Surgery | United Kingdom |
| SurgeryDubai.com | United Arab Emirates | Cosmetic surgery | United Arab Emirates |
| SurgeryInFrance | France | Surgery | United Kingdom |
| SurgeryPlanet Inc | | | United States of America |
| Surgical Attractions | South Africa | Cosmetic surgery | South Africa |
| Surgical Bliss | South Africa | Cosmetic surgery, Dentistry, Surgery | South Africa |
| Surgical Experts International | Germany | Surgery | Germany |
| Surgical Rejuvenation Centre | South Africa | Cosmetic surgery, Surgery | South Africa |
| Surgical Services International | Venezuela | Cosmetic surgery, Dentistry, Surgery | Venezuela |
| Surgical Tourism Canada | Canada | Surgery | Canada |
| Surgical Trip LLC | Costa Rica, Germany, India, Israel, Jordan, Mexico, Singapore, South Korea, Taiwan, Thailand, Turkey and USA | Dentistry, Obesity surgery, Surgery, Other services | United States of America |
| Surgical Trip Services | Venezuela | Cosmetic surgery, Other services | Venezuela |
| Surgical Trip Services | Venezuela | Cosmetic surgery | Venezuela |
| Surgi-Care Health & Travel | Guatemala | Surgery, Other services | Guatemala |
| SURGI-CARE HEALTH TRAVEL | Guatemala | Cosmetic surgery, Surgery | Guatemala |
| SurgiGo | India | Surgery | United Kingdom |
| Surrogate motherhood center "La Vita Felice" | | | Ukraine |
| Sushrut Hospital | India | Surgery | India |
| Sushruta Hospital | India | Surgery | India |
| SV Plastic Surgery Center | | Surgery - Cosmetic and plastic | Lithuania |
| Sweetchild Group | Russia | Infertility treatment | Russia |
| Swiss Dentist Abroad Dental Implant Centre | Switzerland | Dentistry | Switzerland |
| Swiss Medica | Switzerland | | |
| Swissna Group AG | | Cancer treatment, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Medical and health spas, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery –... | Switzerland |
| Swissna Group AG | | Cancer treatment, Care of the elderly, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Medical and health spas, Stem cell treatment, Surgery -... | Switzerland |
| Swixmed | Switzerland | Surgery | Switzerland |
| Symmetria | Greece | Cosmetic surgery | Greece |
| T&T Executive | Greece | | Greece |
| Tahe Fertilidad | Spain | Infertility treatment | Spain |
| Taipei Medical University - Shuang Ho Hospital | Taiwan | Cosmetic surgery, Infertility treatment, Surgery, Other services | Taiwan |
| Taipei Medical University Hospital | Taiwan, Korea | Cosmetic surgery, Infertility treatment, Surgery | Taiwan |
| Taipei Medical University-Wan Fang Hospital | Taiwan | Care of the elderly, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – General, Surgery –... | Taiwan |
| Taj Medical Group Limited | India | Cosmetic surgery, Surgery | United Kingdom |
| Tanfer Clinic | Turkey | Dentistry | Turkey |
| Target Associates | India | Cosmetic surgery, Dentistry, Infertility treatment, Surgery, Other services | India |
| Taylor Orthodontics | USA | Dentistry | United States of America |
| Teneriffe Vet | | Surgery – General | Australia |
| Teneriffe Vet | | Surgery – General | Australia |
| Teneriffe Vet | Australia | Surgery – General | Australia |
| Terme Selce | Croatia | Medical and health spas | Croatia |
| Thai Cosmetic Surger | Thailand | Cosmetic surgery | Thailand |
| Thai Medical Vacations | Thailand | | Thailand |
| Thai Surgery Travel | Thailand | Cosmetic surgery, Surgery | Thailand |
| Thailand Dental Center | Thailand | Dentistry | Thailand |
| Thailand for health care | Thailand | Dentistry, Infertility treatment, Surgery - Cosmetic and plastic, Surgery – General, Surgery – Gynaecology, Surgery – Heart, Surgery – Hip, Surgery - Knee, Surgery - Obesity, Surgery - Orthopaedic,... | Thailand |
| Thaimed International | Thailand | Cosmetic surgery | Thailand |
| Thalassaemia International Federation | Cyprus | Other services | Cyprus |
| Thantakit Dental Center | Thailand | Dentistry | Thailand |
| The Amar Clinic | Spain | Cosmetic surgery | Spain |
| The Barraquer Eye Centre | Spain | Surgery | Spain |
| The Budwig Center | Spain | Other services | Spain |
| The Centre for Assisted Fertilisation | Italy | Infertility treatment | Italy |
| The Clinic Finder | Worldwide | | United Kingdom |
| The Cyprus Institute of Neurology and Genetics | Cyprus | | Cyprus |
| The Dental Tourist | Croatia | Dentistry | United Kingdom |
| THE DENTIST | | Dentistry | India |
| The DENTISTS | Spain | Dentistry | Spain |
| The Fertility Institute of Murcia (IMFER) | Spain | Infertility treatment | Spain |
| The Flying Patient | Tunisia | Cosmetic surgery, Surgery | United Kingdom |
| The Fountain of Youth Clinic | Spain | Care of the elderly, Medical and health spas, Stem cell treatment | Spain |
| The Health Clinic | Estonia | Medical and health spas, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – Hip, Surgery - Knee, Surgery - Obesity, Surgery - Orthopaedic, Surgery - Shoulder | Estonia |
| The Human Reproduction Problems Clinic | Ukraine | Infertility treatment | Ukraine |
| The Implant and Oral Surgery Centre | Singapore | Surgery | Singapore |
| The Institute for Reproductive Medicine | Ukraine | Infertility treatment | Ukraine |
| The JetSet Patient, Inc | | Dentistry, Drug and alcohol rehab, Hair transplantation, Medical and health spas, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery - Obesity | United States of America |
| The Karen Hospital | Kenya | Cosmetic surgery, Dentistry, Surgery, Other services | Kenya |
| The Lasik Travel Agency | Turkey | Surgery | Germany |
| The Lloyd Law Group PC | United States of America | Other services | United States of America |
| The London Clinic | United Kingdom | Cancer treatment, Care of the elderly, CT and MRI scans, Stem cell treatment, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – General, Surgery – Gynaecology, Surgery – Hip, Surgery - Knee,... | United Kingdom |
| The Masala Travel Company | India | Cosmetic surgery, Dentistry, Surgery, Other services | India |
| The Medical Park | India | Medical and health spas | India |
| The Medical Tourist Company | India, Cyprus, Poland, Singapore and Spain. | Dentistry | United Kingdom |
| The Medical Wellness Institute | Spain | Medical and health spas | Spain |
| The Nairobi Hospital | Kenya | Dentistry, Surgery, Other services | Kenya |
| THE NANEE SUITES | | | India |
| The Rudolfinerhaus | Austria | Surgery – General | Austria |
| The Rudolfinerhaus | Austria | Cancer treatment | Austria |
| The Scheye Group Ltd. | Latin America | Other services | United States of America |
| The Specialty Hospital | Jordan | Surgery - Cosmetic and plastic, Surgery – Gynaecology, Surgery – Heart, Surgery - Orthopaedic | Jordan |
| The Stay Inn | | | India |
| The Swiss Leading Hospitals | Switzerland | Surgery | Switzerland |
| The Vision Centers - Summerlin Vision Center | | Surgery – Eye | United States of America |
| Therapeutic Aids | India | Dentistry, Surgery | India |
| Thind Dental Clinic | India | Dentistry | India |
| Thomas Cook Overseas | Worldwide | | Egypt |
| Tibor Dental | Ireland | Dentistry | Ireland |
| Tibordental | Hungary | Dentistry | Ireland |
| TicketMed | Costa Rica, Germany, Hungary, India, Israel, Panama, Romania, Singapore, South Africa, Thailand | Cosmetic surgery, Obesity surgery, Surgery, Other services | United States of America |
| Tissu | Seychelles | | |
| TMC Fertility Centre | | Infertility treatment | Malaysia |
| TOBB ETU HOSPITAL | Turkey | CT and MRI scans, Dentistry, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – General, Surgery – Gynaecology, Surgery – Heart, Surgery – Hip, Surgery - Knee, Surgery - Orthopaedic, Surgery -... | Turkey |
| Tokuda Hospital Sofia | Bulgaria | Surgery, Other services | Bulgaria |
| Toncic Cosmetic Surgery | Croatia | Cosmetic surgery | Croatia |
