Peter Jankowitsch (born July 10, 1933) is a former Austrian diplomat and politician.
He was born in Vienna, Austria. A law graduate, he is a member of the Austrian Social Democratic Party (SPÖ). From 1983 to 1986, 1987 to 1990 and 1992 to 1993 he was a member of the Nationalrat, from 1986 to 1987 Federal Minister of Foreign Affairs. From 1990 to 1992 he joined the government again as a secretary of state in the Federal Chancellery. From 1993 to 1998 he was Austria's ambassador at the OECD in Paris.