| Date: | 12–18 May |
| Edition: | 72nd |
| Category: | Grand Prix (Super Series) |
| Prize Money: | $200,000 |
| Draw: | 64S / 32D |
| Surface: | Clay / outdoor |
| Location: | Hamburg, West Germany |
| Venue: | Am Rothenbaum |
| Champs: |  Harold Solomon[1] |
| Before Name: | German Open |
| Main Name: | Grand Prix German Open |
The 1980 German Open Championships was a men's tennis tournament played on outdoor clay courts at Am Rothenbaum in Hamburg, West Germany that was part of the Super Series of the 1980 Grand Prix circuit. It was the 72nd edition of the event and took place from 12 May until 18 May 1980. Second-seeded Harold Solomon won the singles title.
Harold Solomon defeated 
Guillermo Vilas, 6–7, 6–2, 6–4, 2–6, 6–3
Andrés Gómez / Hans Gildemeister defeated Reinhart Probst / Max Wünschig, 6–3, 6–4