The 1977 Swiss Open Championships was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland.

It was the 32nd edition of the tournament and was held from 3 July through 10 July 1977.

The tournament was part of the Grand Prix tennis circuit with a total prize money available of $75,000.

Fourth-seeded Jeff Borowiak won the singles title.

[3] Jeff Borowiak defeated Jean-François Caujolle 2–6, 6–1, 6–3 Jürgen Fassbender / Karl Meiler defeated Colin Dowdeswell / Bob Hewitt 6–4, 7–6