Castle Rock was a monthly newsletter about Stephen King published from January 1985 through December 1989. It was edited by Christopher Spruce, King's brother in law.
Castle Rock Entertainment is Rob Reiner's film production company, which he named in honor of Stephen King after their success with the film Stand by Me.
Castle Rock Winery is a winery in California.
Several towns in the United States are named "Castle Rock":
"Castle Rock" is frequently used as the name of a mountain or rock outcropping.
The Castle Rock in Castle Rock State Park in the Santa Cruz Mountains of California is popular with residents of the San Francisco Bay Area for rock climbing practice.
The Castle Rock near Leavenworth, Washington is also a popular climbing destination, first climbed in 1957 by Fred Beckey, Dave Collins, and Don Gordon.
There is a Castle Rock near McMurdo Station in Antarctica.