The albums discography of British-Australian recording artist Olivia Newton-John consists of twenty-six studio albums, six live albums, fourteen compilations and six soundtracks. According to Billboard, Newton-John is the 44th most successful artist of all time. She is also listed as the 36th top female artist on the Billboard 200 all-time female list. To date, she has sold an estimated 100 million records worldwide, making her one of the world's best-selling artists of all time.

Dame Olivia Newton-John was a British and Australian singer and actress. She was a four-time Grammy Award winner whose music career included fifteen top-ten singles, including five number-one singles on the Billboard Hot 100 and two number-one albums on the Billboard 200: If You Love Me, Let Me Know (1974) and Have You Never Been Mellow (1975). Eleven of her singles and fourteen of her albums have been certified Gold by the Recording Industry Association of America (RIAA).