Date of Birth: 
About Olli Mennander
- Olli Adolf Mennander (6 June 1936 Mikkeli - 6 October 2012 Helsinki ) was a Finnish diplomat, a Bachelor of Political Science.
- He was the Finnish Ambassador at the Permanent Representation of International Organizations in Geneva 1986-1989, the negotiating official in the Ministry for Foreign Affairs 1989-1991, the Ambassador in Brussels 1991-1996 and Bern 1996–2001 -2001 He was accredited to the Holy See since 1991.
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