I found this list at http://www.georgetown.edu/cball/animals/cat.html

MEOW

Afrikaans: miaau
Albanian: mjau
Arabic (Algeria): miaou miaou
Bengali: meu-meu
Catalan: meu, meu
Chinese (Mandarin): miao miao
Croatian: mijau
Danish: mjav
Dutch: miauw
English: meow
Esperanto: miaw
Estonian: näu
Finnish: miau, kurnau
French: miaou
German: miau
Greek: niaou
Hebrew: miyau
Hindi: mya:u, mya:u:
Hungarian: miau
Icelandic: mjá
Indonesian: ngeong
Italian: miao
Japanese: nyaa
Korean: (n)ya-ong
Norwegian: mjau
Polish: miau
Portuguese: miau
Russian: myau
Slovene: mijau
Spanish (Spain, Argentina): miau
Swedish: mjau
Thai: meow meow (with high tone)
Turkish: miyauv, miyauv
Ukrainian: myau
Vietnamese: meo-meo

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I think we had a thread about this topic a while back - hope this isn't a repeat!