Peter Stephen Wilenski, AC (10 May 1939 – 3 November 1994) was a senior Australian public servant and ambassador.

[4] He later studied at the University of Sydney where he met his first wife, Gail Radford, when both were student politicians.

[8] In March 1983 Wilenski was placed in his second Secretary role, this time as head of the Department of Education and Youth Affairs.

[9] Wilenski was appointed Secretary of the Department of Foreign Affairs and Trade in 1992, but retired from the position in 1993 due to ill health.

[4][10] In 1994, Wilenski was named a Companion of the Order of Australia for service to international relations and to public sector reform, particularly through fostering the implementation of social justice and equity principles.