The $2-million Champions Tour event will be contested at Calgary's Canyon Meadows Golf and Country Club from Aug. 26 to Sept. 1.
Couples is third in the Champions Tour standings with six top-10 finishes in eight events this year. The Hall-of-Fame golfer won the Masters in 1992 and has 15 PGA Tour, three European and eight Champions wins to his credit.
"I have always enjoyed playing up in Canada, so I'm really looking forward to being part of the inaugural Shaw Charity Classic," said Couples, who is competing in the British Open this week. "Calgary has been through a very challenging summer, but I hope the community will be able to enjoy watching some great tournament golf at Canyon Meadows. We all want to support the tournament's efforts to help out some of the wonderful charities in the region."
Barr, from Kelowna, B.C., played 17 consecutive seasons on the PGA Tour before making his debut on the Champions Tour in 2002.
Couples and Barr will join a field including Steve Elkington, John Cook and back-to-back major champion winner, Kenny Perry.
The event has committed $1.25 million in donations to date to charities in southern Alberta.
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