Klaus Ring (born 25 February 1934) is a German microbiologist who served as president of the Goethe University Frankfurt from 1986 to 1994.

In 1968 he earned the habilitation and in 1971 he was appointed professor of microbiological chemistry at Frankfurt.

Ring's scientific focus during this time was the structure and function of biological membranes.

From 1980 to 1986 he was vice dean for preclinical studies and research, a board member of the university hospital and a member of the university senate.

From 1991 to 1994 Ring was a member of the presidium of the Comité de Liaison (the later European Rectors' Conference) in Brussels.