The 1972 Grand Prix German Open was a men's tennis tournament played on outdoor red clay courts. It was the 64th edition of the event and was part of the 1972 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from June 5 through June 11, 1972. Manuel Orantes won the singles title.
Manuel Orantes defeated Adriano Panatta 6–3, 9–8, 6–0
Jan Kodeš / Ilie Năstase defeated Bob Hewitt / Ion Ţiriac 4–6, 6–0, 3–6, 6–2, 6–2