The former Australian cricket captain has been named a marquee player in the Canadian T20 League.
Smith was stripped of the Australian captaincy and handed a 12-month worldwide suspension for his role in the recent ball-tampering scandal.
Warner was also handed a ban from the ball-tampering scandal having been Smith's vice-captain.
He had been on a United States dollars 1.9 million contract with Indian Premier League (IPL) side Rajasthan Royals but stepped down amid the scandal.
The Global T20 Canada consists of five Canadian teams and a Cricket West Indies representative team, made up entirely of players from the Caribbean.
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Smith, ICC's No.1-ranked Test batsman, was sacked and sent home in disgrace following a ball-tampering row during the third Test between Australia and South Africa in March.
The Canadian competition starts at the end of June and will be run over three weeks across three venues in the greater Toronto area.
The opener, who is banned from state and global cricket, is due to play domestic matches for Sydney grade club Randwick Petersham in the autumn. The players' draft will be held next week.
Speaking about this association, Cricket West Indies (CWI) President, Dave Cameron, said, "On behalf of CWI, I would like to wish Global T20 Canada much success". The Championship match will be played on July 16.
The batsman will headline the league alongside a crop of big names including fellow Australia worldwide Chris Lynn and a number of West Indies stars.
The entire tournament will take place at Maple Leaf Cricket Club located in King City, Ontario, a small rural village 25 miles north of downtown Toronto. "Canadian cricket fans will have a great opportunity to see up close numerous world's greatest players, and I'd like to thank International Cricket Council, CWI and the international cricket community for their guidance and support in growing cricket in Canada", said Ranjit Saini, President, Cricket Canada.