Physical is the eleventh studio album by British-Australian singer Olivia Newton-John, released through MCA Records on 13 October 1981. The album was produced and partly written by her long-time record producer John Farrar. Recorded and mixed at Ocean Way and David J. Holman's studio in Los Angeles, Physical became one of Newton-John's most controversial and sexual records, and her most successful studio album. Musically, the album features considerable use of synthesizers, and it explores lyrical themes such as love and relationships, sex, and environmental protection. Upon its release, the album received positive reviews from music critics, many of them considering it to be Newton-John's best effort. The album charted high in several countries, including the United States, Japan and Newton-John's native Australia, becoming one of the most successful albums of the early 1980s. It also ranks among the best-selling albums by Australian solo artists, selling more than ten million copies worldwide.

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).