Niels Toller (1592 – 8 January 1642) was a Danish-born merchant who settled in Norway and became the wealthiest person in Christiania.
He first arrived in Norway in 1620 and quickly began to establish itself as a businessman, and received citizenship in 1621.
He became part of a network of enterprising merchants from Haderslev, which also included Hans Stockfleth and Johan Garmann.
[2][3] After a devastating fire in 1624, King Christian IV ordered the old city of Oslo to be moved closer to the fortification of Akershus Castle and also renamed it to Christiania.
Niels Toller achieved monopoly on the trade in Old Oslo, and had favourable agreements with the Crown's sawmills along Akerselva.