David Tremblay won the men's 61-kilogram title, Dori Yeats won the women's 69 kg title and Arjun Gill won gold in the men's 97 kg event.
Tremblay, from Windsor, Ont., defeated India's Bajrang Bajrang 12-1 in the final match.
"I got him in a technique, with that technique, you can finish the match very quickly and that's something that I like to do," said Tremblay, who defeated Bajrang, a bronze medallist at the world championships, more decisively than expected. "You look at all my matches, I get them down there, and it's almost over after."
Bajrang took silver while Nigeria's Amas Daniel and Scotland's Viorel Etko won bronze.
Montreal's Yeats beat Cameroon's Angele Tomo 10-0 in her final. She said she had plans for her first medal from a major Games.
"Wear it. Sleep with it, eat with it, got to school with it, figure out how to wrestle with it," she said. "I will probably just put it with my collection of medals I really like.
"This is my first major Games. It's awesome to win, for sure and it's a good preparation for the Olympic Games, obviously. It's not like I'll be walking into a Village for the first time at the Olympics, it's the perfect warm-up."
Navjot Navjot Kaur of India and Hannah Rueben of Nigeria won bronze.
Gill, from Surrey, B.C., beat India's Satywart Kadian by decision in the final after the match finished tied 4-4.
"It was tough, really tough," Gill said. "(Kadian) moves his hands really well so it's hard to score.
"This means a lot. It means a lot to my family, It means a lot to me, it means a lot to Canada."
England's Leon Rattigan and New Zealand's Sam Belkin won bronze.
Canada has had a run of success on the mat at the Games. Erica Wiebe and Korey Jarvis won wrestling gold medals Tuesday.
Also Wednesday, Jill Gallays of Saskatoon and Braxton Stone-Papadopoulos of Pickering, Ont., won bronze medals.
Gallays won bronze in the women's 53 kg, beating Christelle Lemofackletchidjio of Cameroon.
Stone-Papadopoulos defeated Cameroon's Edwige Ngono Eyia to win bornze in the women's 58 kg.
Canada has eight total medals in wrestling: five gold and three bronze.