Kjersti (pronounced SHER-sty) Flaa is a Norwegian junket reporter and journalist known for her promotional interviews with celebrities.

In 2020, Flaa sued the Hollywood Foreign Press Association after it didn't elect her as a member. Her suit was dismissed, but inspired an investigation that led to changes in the organization.

She gained public attention in August 2024 after she reuploaded a 2016 interview with actresses Blake Lively and Parker Posey promoting the film Café Society, where Lively showed hostility towards Flaa. The uploading coincided with controversy surrounding the film It Ends with Us involving Lively, who starred in the film, as well as the film's director Justin Baldoni.