Secret Story is a French reality competition television show.

Despite not being an adaptation of the Big Brother franchise, the show has a similar concept. It follows a group of contestants who live together in a specially constructed house named La maison des secrets (The House of Secrets) that is isolated from the outside world for a cash prize. The contestants are continuously monitored during their stay in the house by live television cameras as well as personal audio microphones. Throughout the course of the competition, contestants are evicted from the house, by being voted out of the competition. All contestants have a secret that they try to hide, while trying to discover the other housemates' one.

The show was hosted by Benjamin Castaldi for the first eight seasons, and by Christophe Beaugrand for the last three. Each seasons are composed of daily shows that aired daily during the afternoon, and live shows that aired in the evening once a week. From the third to ninth seasons, the live shows where followed by an after show titled After Secret, co-hosted by Castaldi and Adrien Lemaître from seasons three to eight, and Beaugrand for the ninth.

Secret Story premiered on 23 juin 2007 on TF1. For the ninth season, the daily and after shows moved to NT1 while the live shows where still airing on TF1. But following a ratings declined, the last two seasons where moved completely to NT1, with TF1 only airing the first live show of each seasons. In May 2018, the show was canceled after eleven seasons.

In October 2023, a revival scheduled for 2024 was announced by the TF1 Group.Secret Story has spanned a franchise with numerous international adaptations including Portuguese, Dutch, Peruvian, Lithuanian, and Spanish versions.