The Welsh club confirmed one of the worst-kept secrets in rugby league when the 48-year-old Noble was unveiled at a press conference at the Celtic Manor Hotel.
Ex-Huddersfield coach Jon Sharp, who was assistant to Noble with Great Britain from 2004-05, will be first team coach while Iestyn Harris, newly-appointed Wales national coach, is also joining a new-look backroom staff as assistant.
The announcement comes 11 days after Wigan confirmed that former Bradford boss Noble would not be given a new contract with the Warriors.
Crusaders chairman Leighton Samuel said: "We are delighted that Brian has accepted the job of head coach here at the Crusaders.
"His track record in Super League is second to none and I'm sure that he will be a massive success here, the same as he has been at Bradford and Wigan."
Noble succeeds Australian John Dixon, whose contract was not renewed after the Crusaders finished bottom of the table at the end of their inaugural season in Super League.
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Super Leaguer, Bolton (14/10/2009 at 13:43)
I'm sure the appointments of Brian Noble, Jon Sharp and Iestyn Harris will have an instant impact down in the valleys.
Knowall, stretford end (14/10/2009 at 16:01)
Gran Canarian, Gran Canaria (14/10/2009 at 22:29)