Sven Jonas Gerhardsson Hafström (born 27 February 1948) is a Swedish diplomat who was Sweden's Ambassador to the United States from 2007 to 2013.

In 1979 he was employed at the Swedish Ministry for Foreign Affairs in Stockholm and from 1979 to 1981 he served as press secretary to then Minister for Justice Håkan Winberg.

From 1987 to 1991, Hafström served as press secretary and foreign policy advisor to then chairman of the Moderate Party, Carl Bildt.

From 1994 to 2000, Hafström was head of the International Bureau of the Moderate Party and foreign policy advisor to Carl Bildt.

As such he was noted for his efforts during the tsunami disaster on 26 December 2004, which affected many Swedish tourists in Thailand.