The document, originally ratified in 1999 on the exit of the military, has been available only in English until now.

The Change Movement – a volunteer social and political organization dedicated to the promotion of “participatory democracy, open governance, open budgeting, accountability and citizens’ participation in Nigeria” just translated the Nigerian constitution into Yoruba and is looking for volunteers to translate it further into all the other major (and minor) Nigerian languages.

It can be downloaded on this page, where other information about the group and effort is also listed.