Swingstock is an annual summer camp for swingers that takes place in the United States.
The couples, males and females and adults-only camp has been running since 1988, with the exception of one summer. The event consists of orgies and entertainment organised by the campers themselves. The camp is held from a Wednesday through Sunday in mid July. Originally publicised only by word of mouth, its appearance on the adult programmes Sexcetera and Real Sex introduced it to a worldwide audience and greatly increased its profile and attendance. The location of the camp changed from year to year up until recently, when it began being held at the Two Creeks Campground, near Sandstone, Minnesota. The name is derived from a combination of 'Woodstock' and 'swinger'.
Attendance has historically been 300 to 1000 people.