AMK Ranch, Historic district in Teton County, United States.

AMK Ranch sits on the eastern shore of Jackson Lake with 17 buildings constructed using rustic architecture and log building techniques. The structures are arranged across the property as a cohesive complex that has functioned as a residential property and later as a research facility over more than a century.

John Dudley Sargent and Robert Ray Hamilton founded the original homestead in 1890, establishing the northernmost settlement in Jackson Hole. The property changed hands several times in subsequent decades before becoming a scientific research center in the mid-20th century.

The name AMK combines the initials of Alfred and Mae Berol and the word "Kamp" (camp), reflecting the family's use of the site as a summer retreat. The property is also known as the Merymare, Lonetree and Mae-Lou Ranch. Since 1953 it has served as a University of Wyoming field research station, and the 17-building complex retains 14 contributing structures.

The ranch lies on the eastern shore of Jackson Lake, north of Colter Bay Village, inside Grand Teton National Park. The 17-building complex includes 14 contributing structures of the historic district. Access is by road within the park; conditions vary with the season, so check locally before setting out.

The ranch's name comes from the initials of Alfred and his wife, Mae-Lou, and it was also known as the Merymare and Lonetree Ranch. Sargent and Hamilton, the 1890 homesteaders, were remittance men sent west by their families; Sargent may have murdered Hamilton on Signal Mountain, named for the signal fire lit by searchers who found the body.