Nils August Andresen Butenschøn

Nils August Andresen Butenschøn (3 February 1842 – 27 September 1935) was a Norwegian businessperson.

He was born in Kristiania (now Oslo, Norway) as the only son of banker Nicolay August Andresen (1812–1894) and Nilsine Augusta Butenschøn (1818–1842). He was a grandson of Nicolai Andresen and grandnephew of Johan Henrik Andresen. His forefathers had founded and run a banking company later named Andresens Bank. In 1893, he took his mother's surname, Butenschøn.

He joined the company in 1867, as a junior partner of his father and his uncle Engelhart Andresen. They died in 1894 and 1896 respectively, but from 1892 Butenschøn was a partner with his cousins Carl Christian and Engelhart Jr (the latter left in 1902). His son became a company partner in 1910, and by that time there were two additional partners as well; Herbert and Viktor Plahte, two brothers of Mabel Plahte.