Marčiulionis
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Marčiulionis is a Lithuanian surname. Notable people with the surname include:
- {{ill|Aleksandras Marčiulionis|lt}} (1911–1998), Lithuanian sculptor
- {{ill|Danute Marčiulionienė|lt}} (born 1938), biologist and ecologist, pioneer of radioecological research in Lithuania
- Šarūnas Marčiulionis (born 1964), Lithuanian basketball player
- Kęstutis Marčiulionis (born 1977), Lithuanian basketball player
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