Elias Cathrinus Kiær (27 February 1863 – 13 April 1939) was a Norwegian businessperson.
H. Kiær & Co from his uncle Anders—co-owners were his uncle Hans Theodor, first cousin Frits and Anders' son-in-law Peter Collett Solberg.
The company was greatly expanded in the years before 1920, buying forest areas and founding paper mills and sawmills.
However, following the economic hardships of the Interwar Period, the company declined.
This Norwegian business biographical article is a stub.