The 1990–91 Frauen-Bundesliga was the first season of the Frauen-Bundesliga, the premier women's association football league in Germany after the previous seventeen years saw the league be competed in a single-elimination tournament.

Twenty teams competed in two separate groups of ten with the top two teams from each group qualifying through to the final.

[1] In the final, it was TSV Siegen who claimed the first Frauen-Bundesliga as they defeated FSV Frankfurt 4–2 in the final.