OpenOffice supports more than 120 languages but the current project policy requires that a native-language version is 100% translated and actively maintained to be released.
The progress on translation status can be seen for each language at
https://translate.apache.org/projects/aoo40/
See http://openoffice.apache.org/translate.html to know how you can help translating OpenOffice into your language. The same page has information on how to request a Pootle account, needed for translators.