In 1936 Ravenna made their first appearance in the Serie C, where they played until 1948. In 1949 the club, now playing in the amateur Interregionale league, became known as "Unione Sportiva Ravenna", then switching this denomination to "Sarom Unione Sportiva Ravenna" for sponsorship reasons in 1954, maintaining it for ten years. Ravenna returned to Serie C in 1950 for a single season, and again in 1955, playing in this division until 1971, when they relegated to Serie D. Another Serie C spell from 1972 to 1976 was followed by two consecutive relegations. Two promotions in a row from 1980 to 1982 then brought the club back to the pro leagues, in the recently created Serie C2. Ravenna relegated to Serie D in 1984, but promptly returned to Serie C2.