|Church||Church of Norway|
|Born||29 December 1801|
|Died||20 May 1860 (aged 58)|
|Alma mater||University of Oslo|
Gislesen was born at Løxlie in the parish of Hjartdal in Telemark, Norway. He moved to Oslo in 1825 to pursue his education at the University of Oslo. He received his cand.theol. degree in 1830. His first job was as a teacher at the school in Skien in 1831. He took a position as chaplain at Asker Church (Ask Kirke) in 1833. In 1834, he was named the head of the Asker Seminary. In 1855 he became a vicar in Gjerpen, and then in May 1856 he was named as Bishop of the Diocese of Tromsø. He remained there until his death in 1860. 
During his time at the Asker seminary, he wrote a Biblical history book in 1853. A revised and expanded version was published in 1858. In March 1854, he married Henriette Gislesen (1809–1859) who was a noted author. He received the Order of Vasa in 1843 and the Order of St. Olav in 1858.
- "Knud Gislesen". lokalhistoriewiki.no. Retrieved 1 February 2018.
- "Asker kirke". Den norske kirke. Retrieved 1 February 2018.
- Store norske leksikon. "Knud Gislesen" (in Norwegian). Archived from the original on 22 February 2013. Retrieved 15 March 2012.
- "Henriette Gislesen (1809–1859)". lokalhistoriewiki.no. Retrieved 1 February 2018.
Daniel Bremer Juell
| Bishop of Tromsø stift
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