Tjeldsund (Norwegian) or Dielddanuorri (Northern Sami)[5][6] is a municipality in Troms county, Norway.

Other important villages include Boltåsen, Fjelldal, Grov, Myklebostad, Ramsund, Renså, Sandstrand, and Tovika.

Norges Brannskole (Norway's education and training center for firemen) is situated in Fjelldal.

[12] The municipality is named after the Tjeldsundet strait which runs between the islands of Tjeldøya and Hinnøya.

The first element is the (uncompounded) Old Norse name of the island of Tjeldøya (Tjöld or Tjalda).

It is called Dielddanuorri when it is spelled alone, but it is Dielddanuori suohkan when using the Sami language equivalent to "Tjeldsund municipality".

The official blazon is "Argent, a cross of St. Anthony azure" (Norwegian: I sølv et blått Antonius-kors).

The blue cross shape also stands for the confluence of the Tjeldsundet and Ramsundet straits which run between the mainland and the islands of Tjeldøya and Hinnøya.

The municipal council (Kommunestyre) of Tjeldsund is made up of 21 representatives that are elected to four year terms.

The tables below show the current and historical composition of the council by political party.