The 24-year-old is one of five athletes selected to the team.
The Canadian Olympic Committee and Roller Sports Canada selected four of the country's best to compete in speed skating and one to represent the host nation in figure skating.
Maltais, of Saguenay, Que., raced to a silver medal in short track speed skating in the 2014 Winter Olympics.
"My teammates and I have been working so hard to get to this point and to know that we will represent Canada on home soil at an international event of this calibre is an honour," Maltais said.
"We will do everything we can to make you proud this summer."
The lone member of the figure skating team is Whitby's Kailah Macri, who has competed in seven world championships for Canada and had a fifth place finish the Pan Am Games in Guadalajara, Mexico in 2011.
Canadian roller sports team for Pan Am Games:- Valerie Maltais Saguenay, Que., women's speed skating team
- Morgane Echardour Mississauga, Ont., women's speed skating team
- Jordan Belchos Scarborough, Ont., men's speed skating team
- Christopher Fiola Montreal, Que., men's speed skating team
- Kailah Macri Whitby, Ont., women's figure skating team