Martti Ahtisaari, Finnish captain and politician, 10th President of Finland, Nobel Prize laureate
Martti Oiva Kalevi Ahtisaari (Finnish: [ˈmɑrtːi ˈʔoi̯ʋɑ ˈkɑleʋi ˈʔɑhtisɑːri] (listen); born 23 June 1937) is a Finnish politician, the tenth president of Finland (1994–2000), a Nobel Peace Prize laureate, and a United Nations diplomat and mediator noted for his international peace work.

Ahtisaari was a United Nations special envoy for Kosovo, charged with organizing the Kosovo status process negotiations, aimed at resolving a long-running dispute in Kosovo, which later declared its independence from Serbia in 2008. In October 2008, he was awarded the Nobel Peace Prize "for his important efforts, on several continents and over more than three decades, to resolve international conflicts". The Nobel statement said that Ahtisaari had played a prominent role in resolving serious and long-lasting conflicts, including ones in Namibia, Aceh (Indonesia), Kosovo and Serbia, and Iraq.Since the death of Mauno Koivisto in May 2017, Martti Ahtisaari is currently the oldest living President of Finland.