Kristen Feilberg or Christen Schjellerup Feilberg (1839–1919) was an early Danish photographer who is known mainly for his images captured far beyond the borders of Denmark. From the 1860s until the 1890s, Feilberg participated in expeditions to Sumatra, Singapore, and Penang. In 1867, he exhibited photos at the Paris World Exposition and around 1870 he joined an expedition to the Batak lands of North Sumatra with the Dutch explorer C. de Haan from which he returned with 45 successful "photogrammes". 
Kristen Feilberg was born on 26 August 1839 in Vester Vedsted near Ribe in the west of Jutland, Denmark. He was the son of Nikolai Laurentius Feilberg, a well-known cleric, and Conradine Antonette Caroline Købke (sister to the painter Christen Købke).  He was trained as a photographer. 
After giving up his dream of becoming a painter, he followed his sister to Singapore in 1862 where he worked partly as a tobacco agent and partly as a photographer.  In 1864, Feilberg together with August Sachtler took over the photographic studio in Singapore known as Sachtler & Co. Soon afterwards, together with E. Hermann Sachtler, he established a branch office in Penang. In 1867, Feilberg set up his own studio in Penang and, the same year, exhibited 15 views of Penang and Ceylon at the Paris World Exposition.  He also produced a 10-part panoramic view of Penang taken from Edinburgh House.
The earliest photographs of eastern Sumatra were taken by Feilberg in 1869. Considered to be of excellent quality, they include integrated group portraits of workers on tobacco plantations such as the one at Arendsburg. They are presented in three albums entitled "Views" at the Royal Tropical Institute.  In the late 1860s or early 1870s, Feilberg made a photographic tour of Sumatra. In 1867, he was already in Deli and he returned there in 1880. In September of that year, he joined an expedition with C. de Haan who had been appointed by the Dutch East Indies government to explore the area in the interior around Lake Toba where he photographed the landscape and the Batak people, including the hierarchical princes. Photographing Lake Toba was an achievement akin to the discovery of Lake Victoria in 1858. Despite numerous obstacles, Feilberg was able to record the geography of the region, a feat highly appreciated by de Haan who spoke of the beauty of the landscape. 
In the 1880s, he again worked as a photographer in Singapore.  He also worked as a buyer for the Danish East Asiatic Company.  Some time after 1880, he spent a few years in Denmark where he also worked as a photographer. In 1890, he returned to Singapore where he worked for several photo studios. 
Feilberg died in Singapore in 1919. 
On 1 May 1865, Feilberg married Emma Alice Mac-Intine, a Scottish Indonesian with whom he had a daughter, Emma, in George Town, Penang.  The mother died shortly after childbirth in March 1866. In 1876, he married Anna Eleonora Sophie Lassen but the marriage was not successful and she returned to Denmark. They had one child, Hjalmar, who was born in 1877 in Medan-Deli, Sumatra but who died at the age of 2 in Holbæk. 
- "Anceaux's Glasses: Anthropological photography since 1860". Archived 2011-07-18 at the Wayback Machine Retrieved 11 October 2010.
- "Christen Schjellerup Feilberg + Emma Alice Mac-Intine", Alexander Jensegs slektsdatabase[ permanent dead link]. Retrieved 10 October 2010.
- Peter Beck, "Nikolai Laurentius Feilbergs levnedsløb og kredsen om ham : præst i Vestjylland 1834-47 og i Ullerup på Sundeved 1848-64", Herning: Poul Kristensen, 1981. - 183 pages. ISBN 87-7468-124-9
- Lars Feilberg, Farbror Kristens liv – (Christen S. Feilberg 1839-1919). ISBN 978-87-7691-649-7
- Dirk Janse, "Het Koloniale Album als Verhaal, Beeldvorming in fotoalbums uit Sumatra, 1860-1900", Doctoral thesis University of Utrecht, Summer 2007. (in Dutch)
- Mattie Boom, "Fotografie in de Sumatra-albums van Paul Sandel", Archived 2012-10-10 at the Wayback Machine Bulletin van het Rijks Museum, Jaargang 53, 2005, nummer 3. (in Dutch) Retrieved 11 October 2010.
- Khoo Salma Nasution, "More than merchants: a history of the German-speaking community in Penang, 1800s-1940s", Areca Books, 2006, page 34. ISBN 983-42834-1-5.
- "Tropenmuseum", search page Archived 2010-12-23 at the Wayback Machine. Retrieved 8 October 2010.
Media related to Kristen Feilberg at Wikimedia Commons