European Languages:
* Spanish: Noventa y nueve
* French: Quatre-vingt-dix-neuf
* German: Neunundneunzig
* Italian: Novantanove
* Portuguese: Noventa e nove
* Russian: Девяносто девять (Devjanosto devyat')
* Polish: Dziewięćdziesiąt dziewięć
* Dutch: Negenennegentig
* Swedish: Nittionio
* Danish: Nioghalvfems
Asian Languages:
* Chinese (Mandarin): 九十九 (Jiǔ shí jiǔ)
* Japanese: 九十九 (Kyūjūkyū)
* Korean: 구십구 (Guseobgu)
* Hindi: निन्यानबे (Ninyanbe)
* Arabic: تسعة وتسعون (Tisa'a wa tis'oon)
Other Languages:
* Latin: Nonaginta novem
* Greek: Ενενήντα εννέα (Enenenínta ennéa)
* Hebrew: תשעים ותשע (Tish'a veTesha)
This is just a small sampling of the many languages in the world. Let me know if you'd like to know how to say 99 in a specific language!