IT DOESN'T MATTER

Albanian

s'ka gajle (never mind). (various references)

Chinese 

沒關係 , 沒甚麼 (it's nothing, never mind, nothing), 不要緊 (but, it looks all right, never mind, not serious, unimportant). (various references)

Danish

det gør ikke noget (never mind, that's all right, you're welcome). (various references)

Dutch

het geeft niet, het doet er niet toe (never mind, that's all right, that's okay, you're welcome), datisnieterg (never mind, that's all right, that's okay, you're welcome), datgeeftniet (never mind, that's all right, that's okay, you're welcome), dat is niet erg (never mind, that's all right, you're welcome), dat geeft niet (never mind, that's all right, you're welcome). (various references)

Esperanto

tio ne gravas (never mind), negravas. (various references)

French

cela ne fait rien (it does not matter). (various references)

German

es macht nichts. (various references)

Hungarian

nem számít (don't mention it, it does not signify, no object, to cut no ice), nem baj (there's no harm in saying so). (various references)

Icelandic

það var ekkert (never mind, that's all right, you're welcome), það gerir ekkert til (never mind, that's all right, you're welcome). (various references)

Indonesian

cincai (bot important). (various references)

Japanese Kanji 

構いません . (various references)

Japanese Katakana 

かまいません. (various references)

Malay

tidak apa apa (never mind, that's all right, you're welcome). (various references)

Norwegian

ingen årsak (never mind, that's all right, you're welcome), det gjør ikke noe (never mind, that's all right, you're welcome). (various references)

Pig Latin

itay oesn'tday attermay.(various references)

Portuguese

poucoimporta (don't mention it, never mind, that's all right, that's okay, you're welcome), nãoimporta (don't mention it, never mind, that's all right, that's okay, you're welcome). (various references)

Romanian

nu face nimic (idle, laze, lie about, muck about, never mind), nu conteazã (no object), n-are nimic (never mind), n-are importanţã (never mind, no object). (various references)

Spanish

no importa (it makes no odds, never mind). (various references)

Swedish

det gör ingenting (never mind). (various references)

Turkish

farketmez (all the same, it makes no matter, same, the same), önemli değil (not at all, not serious), önemi yok (it makes no matter, no matter). (various references)

Ukrainian

це не має значення. (various references)

Zulu

akunandaba (never mind, that's all right, you're welcome). (various references)