Subardjo served as Minister of Foreign Affairs once again from 1951 to 1952 in Sukiman's Cabinet. In addition, he also became the Ambassador of the Republic of Indonesia to Switzerland from 1957 to 1961. Soebardjo died at the age of 82 at Pertamina Hospital, Kebayoran Baru, from influenza complications. He was buried at his vacation home in Cipayung, Bogor. In 2009 the government honoured him as a National Hero.