Dag Tønder (27 June 1907 - 13 July 1989) was a Norwegian editor, lawyer, and public official. He served for a time as a judge in Vardø. From 1951 to 1955 he was acting county governor in Finnmark county, Norway.
Dag Tønder was born on 27 June 1907 in Sjøvegan in Salangen Municipality in Troms county, Norway. On 18 April 1935, he married Rikarda Johanne Mathisen at the Trondenes Church. He died on 13 July 1989. His family name comes from his ancestors who came from the village of Tønder in southern Denmark.
From 1951 to 1955 he was acting county governor in Finnmark county, Norway. He was serving for the Governor Peder Holt who was serving in the Cabinet of Norway at that time. During his time as acting governor, Tønder was helped found the Sámi language newspaper company Northern Sami: [[Ságat]]. He was the chairman of the company from 15 June 1956 to 29 March 1958.[1]