Ilkka Olavi Pastinen (17 March 1928 – 12 January 2018) was a Finnish ambassador who also served as Deputy Secretary General of the United Nations.
Pastinen was born in Turku.
His parents were warehousekeeper Martti Mikael Pastinen and Ilmi Saga Karlström.
He graduated from Ă…bo Akademi University in 1950.
He was the Ambassador of Finland to London from 1983-91.Pastine was an expert and later member of the Finnish delegation in the UN General Assembly, 1957-61, 1965, 1969, 1975-76, as deputy chairman of the delegation in 1970 and Secretary General of the UN's Special Representative in the Conference of the Disarmament matters in Geneva and New York from 1971-74, and as the Negotiating Officer of the Ministry of Foreign Affairs, 1975-77, and Ambassador and UN Permanent Representative in New York, 1977-83.
Pastinen was the Ambassador of Finland to London from 1983-91.At the end of the 1960s and early 1970s, Pastin belonged to the Ministry of Foreign Affairs' group called the Junta of the Colonels which included diplomats as Max Jacobson, Aarno Karhilo, Aimo Pajunen, Risto Hyvärinen and Keijo Korhonen.
They sought to defend Finland's traditional foreign policy of neutrality against the pressures from the Soviet Union and opposed the goals of the Social Democrats led by Kalevi Sorsa to strengthen their position in the Foreign Ministry.The Junta of the Colonels tried to promote Jacobson as UN Secretary General with poor success in 1971.