yes, there are several group retreats for meditation in Canada. Here are some examples:

1. Insight Meditation Society of Canada (IMSC) - This is a non-profit organization that offers retreats in the Theravada Buddhist tradition. Their retreat center is located in rural Ontario and they offer a variety of retreats throughout the year.

2. Dharma Centre of Canada - This retreat center is located in rural Ontario and offers retreats in the Tibetan Buddhist tradition.

3. Yasodhara Ashram - This retreat center is located in British Columbia and offers retreats in the yoga tradition, as well as in other spiritual traditions.

4. Gaia Wellness Retreat - This retreat center is located in Ontario and offers a variety of retreats, including meditation, yoga, and wellness retreats.

5. The Hermitage Retreat Centre - This retreat center is located in rural Saskatchewan and offers retreats in the Christian contemplative tradition.

These are just a few examples of the many retreat centers and organizations that offer group retreats for meditation in Canada. It's worth doing some research to find a retreat center that aligns with your interests and needs.