Castle Rock Entertainment was a motion picture and television studio formed in 1987.

The president and co-founder was Martin Shafer . Other founders included director Rob Reiner and entertainment mogul Alan Horn . Reiner named the company in honor of a fictional town from the works of Stephen King after the success of the film Stand by Me, which was based on a short story by King.

In 1993, Castle Rock was acquired by Turner Broadcasting System, which was eventually merged into Time Warner.

Selected films

• When Harry Met Sally (1989)
• A Few Good Men (1992)
• The Shawshank Redemption (1994)

Selected television shows

• Seinfeld (1990 - 1998)