Authors: Susumu Ariki and Andrew Mathas. Addresses: \sc S.A. & \sc Tokyo University of Mercantile Marine\\ &\sc Etchujima 2-1-6, Koto-ku, Tokyo 135-8533 Japan.\\ \sc A.M. & \sc School of Mathematics and Statistics F07\\ & \sc University of Sydney, Sydney NSW 2006. Australia.\\ www.maths.usyd.edu.au/u/mathas Title: The representation type of Hecke algebras of type $B$ Status: Submitted. Abstract: This paper determines the representation type of the Iwahori-Hecke algebras of type $B$ when $q\ne\pm1$. In particular, we show that a single parameter non--semisimple Iwahori--Hecke algebra of type~$B$ has finite representation type if and only if $q$ is a simple root of the Poincar\'e polynomial, confirming a conjecture of Uno's.