| Date: | 9–15 May |
| Edition: | 69th |
| Category: | Grand Prix circuit (Four star) |
| Surface: | Clay / outdoor |
| Draw: | 64S / 32D |
| Prize Money: | $125,000 (men) $35,000 (women) |
| Location: | Hamburg, West Germany |
| Champms: |  Paolo Bertolucci[1] |
| Champws: |  Laura duPont |
| Champmd: | Bob Hewitt / Karl Meiler[2] |
The 1977 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 69th edition of the event and was part of the 1977 Colgate-Palmolive Grand Prix circuit and categorized as a four-star event. It took place at the Am Rothenbaum in Hamburg, West Germany, from 9 May through 15 May 1977. Paolo Bertolucci, after a victory in the final over title-holder Manuel Orantes, and Laura duPont won the singles titles .[3] [4]
Paolo Bertolucci defeated 
Manuel Orantes 6–3, 4–6, 6–2, 6–3
Laura duPont defeated Heidi Eisterlehner 6–1, 6–4
'Bob Hewitt / Karl Meiler defeated 
Phil Dent / Kim Warwick 3–6, 6–3, 6–4, 6–4
Linky Boshoff / Ilana Kloss defeated Regina Maršíková / Renáta Tomanová 2–6, 6–4, 7–5