Ol' 55 were an Australian band specialising in retro, 1950s-era Rock 'n' Roll. They formed as Fanis in 1972 in Sutherland, Sydney. Drummer Geoff Plummer was working with Glenn A. Baker at the NSW Department of Media and invited Baker to hear his part-time band, including Patrick "Meatballs" Drummond, Rockpile Jones and Jimmy Manzie. In 1975, Baker took on their management, renamed them as Ol' 55 for the Tom Waits song (as covered by The Eagles), and recruited front man Frankie J. Holden and, later in the year, saxophonist Wilbur Wilde.
The band enjoyed popularity with a style that bordered on parody but managed to combine novelty retro kitsch and clever theatrics with a keen sense of pop dynamics and an acute understanding of rock 'n' roll. The band scored five top 20 hits on the Australian Kent Music Report singles chart and their debut album, Take It Greasy peaked at No. 3 on the Australian albums chart in 1976. After line-up changes, Ol' 55 disbanded in 1983.