2 verified US suppliers · re-verified July 2026

US Manufacturers & Suppliers in Ontario

Manufacturers, private-label suppliers and co-packers located in Ontario, compiled from public registries. Ordered by objective, published criteria (see /methodology). Facts re-verified July 2026. Ranking criteria are objective and published in full at /methodology — never pay-to-rank, never editorial opinion.

1GH Guenther Huettlin Manufacturing Inc.

Belleville, Ontario

Live ✓Contract

2Nulogy Corporation

Toronto, Ontario

Live ✓Contract

Listed here and want to add or fix facts? Corrections are free. Suppliers can also claim their listing for a verified badge and self-service fact updates.