The July 10-26 competition marks the first Pan Am women's rugby play. Canada won the men's event four years ago in Guadalajara.
The six-team women's tournament will be played July 11-12 at BMO Field, which will also host the men's play.
Canada is coming off a second-place overall finish on the Women's Sevens Series, a campaign that included a first-ever tournament win in Amsterdam.
That finish assured the women of Olympic qualification.
Landry led the 2014-15 World Series with 301 points and was second in tries with 39.
The Canadian women's main opposition at the Pan Ams will be the Americans, led by former Canadian coach Ric Suggitt. Canada finished second in the World Series standings while the Americans were fifth. Brazil was 10th.
Britt Benn, Napanee, Ont.; Hannah Darling, Lakefield, Ont.; Bianca Farella, Montreal; Magali Harvey, Quebec City; Sara Kaljuvee, Ajax, Ont.; Jen Kish (capt.), Edmonton; Ghislaine Landry, Toronto; Kayla Moleschi, Williams Lake, B.C.; Karen Paquin, Quebec City; Kelly Russell, Bolton, Ont.; Ashley Steacy, Lethbridge, Alta.; Natasha Watcham-Roy, Gatineau, Que.
Head Coach: John Tait.
Assistant coach:Sandro Florino