Theatrical release: July 21, 1989.
Limited release in New York City, San Francisco, San Jose, Toronto, Montreal, and Vancouver: July 12, 1989. Released in Los Angeles on July 14, 1989.
Shown at the Deauville Film Festival on September 4, 1989; the Tokyo International Film Festival on September 30, 1989; and the London Film Festival November 10-26, 1989.
Filmed in New York City, New York; Hollywood and Los Angeles, California; Chicago, Illinois; and New Jersey.
Shooting began on August 29, 1988, and was completed on November 15, 1988.
Estimated budget between $15 and $17 million.
Director Rob Reiner and close friend Billy Crystal were born just six days apart in New York City in March 1947.
Screenwriter Nora Ephron wrote the scripts for other films such as SILKWOOD and MY BLUE HEAVEN before going on to direct films such as SLEEPLESS IN SEATTLE and YOU'VE GOT MAIL.
The scene where Harry (Billy Crystal) and Sally (Meg Ryan) spot each other at a bookstore takes place in a branch of the small chain Shakespeare & Co., which was located at 79th & Broadway in New York City. This location was one of many smaller stores which went out of business around the time a Barnes & Noble megastore opened in nearby Lincoln Center. This store and the stores which went out of business around it would be a model for the activity in the 1998 Nora Ephron film, YOU'VE GOT MAIL.
The customer at Katz's Deli who wants to have what Sally is having is Estelle Reiner, Rob Reiner's mother and Carl Reiner's wife.