Olivia Newton-John – Have You Never Been Mellow
- Label: MCA Records MCA-2133 / 565
- Country: Canada
- Released: 1975
- Grade LP: (VG) Sleeve: (VG+)
Have You Never Been Mellow is the sixth studio album by Australian singer-songwriter Olivia Newton-John, released on 12 February 1975 by MCA Records.
Both the title single and the album rose to the top of their respective US charts (the Billboard Hot 100 singles chart and the Billboard 200 albums chart). The title song and its follow-up, "Please Mr. Please", were both top 10 on three Billboard charts: the Hot 100, Adult Contemporary, and Country.
Outside the United States, the album was released with the single "If You Love Me, Let Me Know", as the single was only released in the United States on the album of the same name.
Unlike in the US, Have You Never Been Mellow was not much of a success in many countries, and in many notable cases (such as the United Kingdom), the title single failed to chart. However, the title song was Newton-John's first single to chart in Japan, where it reached number 26 on the Oricon singles chart, a respectable showing for a non-Japanese artist.