Alf Ihlen (30 June 1900 – 6 April 2006) was a Norwegian industrialist.
He was born in Skedsmo, as a son of engineer and politician Nils Claus Ihlen and Henriette Marie Lund.
He was co-manager of the workshop Strømmens Værksted for about fifty years, along with his brother Joakim Ihlen.
The two brothers developed their company into a world leading producer of aluminium based vehicles in the 1930s.
This Norwegian business biographical article is a stub.