Once You Kiss a Stranger is a 1969 American thriller film directed by Robert Sparr and written by Norman Katkov and Frank Tarloff.

The film stars Paul Burke, Carol Lynley, Martha Hyer, Peter Lind Hayes, Philip Carey, Stephen McNally and Whit Bissell.

The film is a loose remake of Strangers on a Train and was released by Warner Bros.-Seven Arts on November 12, 1969.

The person she wants killed is Dr. Haggis, a psychiatrist who believes Diana to be dangerously disturbed and wants her institutionalized.

Threatening to give the murder weapon to the police, Diana insists that Jerry now get rid of the doctor.