America's Stonehenge is an archaeological site consisting of a number of large rocks and stone structures scattered around roughly 30 acres within the town of Salem, New Hampshire in the northeast United States. America's Stonehenge is open to the public for a fee.

The site was first dubbed Mystery Hill by William Goodwin, an insurance executive who purchased the area in 1937. This was the official name of the site until 1982, when it was renamed "America's Stonehenge", a term coined in a news article in the early 1960s, in an effort to separate it from roadside oddity sites and reinforce the idea that it is an ancient archaeological site. Although the area is named after the archaeological site of Stonehenge in England, there is no cultural connection between the two.