Nils Elias Anckers, (until 1904 Andersson;[1] 7 June 1858 – 13 July 1921) was a Swedish naval officer and marine artist.

[2] Anckers pursued a career as an officer in the Swedish Navy; in 1878 he became underlöjtnant and he entered a special school for torpedo warfare in 1880.

[2][4] Upon his arrival in the Congo Free State, he was assigned surveillance duty of supply magazines in Léopoldville, present-day Kinshasa.

In 1885 he requested and was granted a change of assignment and spent the year and most of 1886 ferrying goods in the interior of Congo; on one of his trips he accompanied German explorer and colonialist Hermann Wissmann to Luebo from Léopoldville.

In 1905 he was promoted to head of the mines division of the Royal Swedish Naval Materiel Administration, and in 1907 reached the rank of kommendör.