Miller becomes the Canadian club's third designated player after signing an undisclosed contract, subject to international clearance.
"I'm delighted to be making this move to Major League Soccer and Vancouver Whitecaps FC," Miller said on his new club's website.
"I have heard many great things about the club and the city of
"To have the chance to continue my career in
The former Rangers and Celtic frontman, 32, made 49 appearances for the Championship side last season and scored 11 goals.
He has also featured in the
Whitecaps head coach
"He has been a proven goalscorer with big clubs in
An emotionally-drained Steve Bruce revealed some of his Hull City players were so nervous they were 'hiding in toilets' when promotion to the Premier League was confirmed on an extraordinary afternoon at the KC Stadium.