Yanhee International Hospital (Thai: โรงพยาบาลยันฮี [roːŋpʰájaːbaːn jənhiː], YAHN-hee) is a multi-service general hospital in Bangkok, Thailand, that specializes in a range of medical and cosmetic services. Yanhee comprises a 15-story hospital building with a 400-bed capacity, 150 full-time doctors, 120 part-time health professionals, and 800 nurses. Additionally, Yanhee operates 95 outpatient examination rooms, 12 major and 30 minor operating rooms, an 18-bed Intensive Care Unit, emergency rooms, delivery rooms, a diagnostic laboratory and a nursery.

Yanhee International Hospital is located in the Bang-O, Bang Phlat District of northeastern Bangkok, on Charansanitwong Road. The hospital maintains 36 treatment centers in general medicine and cosmetics, serving about 2,000 outpatients daily. Yanhee operates 24 hours daily, with services provided by 130 full-time doctor specialists, 125 part-time specialists, and more than 1,500 healthcare professionals and support staff.

Yanhee International Hospital was opened in 1984 as a small outpatient clinic by Supot Sumritvanitcha, who named the hospital after the Yanhee Power Plant located nearby. The hospital is now more well-known than the power plant (which has also since changed its name), and the original Yanhee International Hospital has been expanded.

Early on, Yanhee International Hospital implemented the International Organization for Standardization (ISO) 9001:2000 but later shifted to the Joint Commission International Accreditation, USA starting on 22 January 2011. Yanhee International Hospital consistently renews its Joint Commission International (JCI) accreditation, successfully passing the rigorous, triennial re-accreditation process. Yanhee also has accreditation from Hospital Accreditation, Thailand.

On 25 May 2012, Yanhee International Hospital was awarded the Reader's Digest Gold Award for Asia's Most Trusted Brands. The Reader's Digest Trusted Brands Survey attempts to identify the top brands that consumers in Asia trust. Scoring for the survey is based on six core ideals: trustworthiness and credibility, quality, value, understanding of customer needs, innovation and social responsibility.

Yanhee International Hospital is known for having particularly knowledgeable and skilled surgeons for sexual reassignment surgery, also known as a sex change operation. One of Yanhee's most famous sex change patients is Beautiful Boxer star Parinya Charoenphol, known publicly as Nong Toom. Nong Toom gained fame and fortune in 1998 as a champion kickboxer at Lumphini Stadium, but in 1999 arrived at Yanhe Hospital to undergo a full sex change operation, changing her male body to the female she currently is today.

The hospital was also featured in an episode of National Geographic Channel's Taboo Series, in which a patient sought a facial feminization procedure at Yanhee.

Yanhee is also known for its famous "rollerblade girls," who zip through the hospital carrying patient documents and internal paperwork, wearing short skirts and rollerblades.