Saastamoinen is a Finnish surname. Notable people with the surname include:
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Armas Saastamoinen (1886–1946), Finnish businessman
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Eino Saastamoinen
Kaarlo Eino "Stigi" Saastamoinen (9 October 1887 – 4 December 1946) was a Finnish gymnast. He was the flag bearer for Finland at the 1912 Summer Olympics
The 1912 Summer Olympics ( sv, Olympiska sommarspelen 1912), officially known as the Ga ...
(1887–1946), Finnish gymnast
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Yrjö Saastamoinen (1888–1966), Finnish diplomat and CEO
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Jarmo Saastamoinen (born 1967), Finnish football player
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Finnish-language surnames