Yes it is a boys name. Yuri Geller, a mind bender became quite famous with that name.
(additional answer) There were also Yuri Gagarin and Yuri Andropov.
Yuri Gagarin was sometimes known by a popular variation on his first name: Yura.
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Yuri is the Russian name for "George". Yuri is also a Japanese name for "lily" Yuri could be a girl or boy name.
Yogi, Yasser, Yuri and Yam are boy names. They begin with the letter y.
Yogi, Yasser, Young, Yuri and Yam are boy names.
Yuri Sherling's birth name is Yuri Sherling.
Yuri Buenaventura's birth name is Yuri Bedoya.
Yuri, Yaxley, Yaden, Yaj, Yahir, Yale, Yancy, Yanis, Yarin, Yerick
Yuri Arabov's birth name is Arabov, Yuri Nikolayevich.
Yuri Kayurov's birth name is Kayurov, Yuri Ivanovich.
Yuri Alesin's birth name is Yuri Aleksandrovich Alesin.
Yuri Kulik's birth name is Yuri Vladimirovitch Kulik.
Yuri Lyubimov's birth name is Lyubimov, Yuri Petrovich.
Yuri Machado's birth name is Yuri Pereira Machado.