On 1 September 1992, the name of the municipality was changed to "Deatnu-Tana" to symbolize the two official languages in the municipality. Then in 2005, the name was again changed such that either Deatnu or Tana can be used. The Sami language name spelling changes depending on how it is used. It is called when it is spelled alone, but it is when using the Sami language equivalent to "Deanu municipality".
On 1 September 1992, the name of the municipality was changed to "Deatnu-Tana" to symbolize the two official languages in the municipality. Then in 2005, the name was again changed such that either Deatnu or Tana can be used The Sami language name spelling changes depending on how it is used. It is called when it is spelled alone, but it is when using the Sami language equivalent to "Deanu municipality".