Starbucks: Kirkland Signature House Blend Coffee is said to be produced by Starbucks.
Diamond Pet Foods: They are believed to manufacture Kirkland Signature Pet Foods.
Perrigo: This company reportedly makes Kirkland Signature Prescription and OTC pharmaceuticals.
Bumble Bee Foods: The Kirkland Signature Tuna is thought to be produced by Bumble Bee.
Duracell: Kirkland Signature Batteries are believed to be made by Duracell.
Grey Goose: It's rumored that Kirkland Signature Vodka is produced by the same distillery that makes Grey Goose.
Ocean Spray: The Kirkland Signature Cranberry Juice is said to be made by Ocean Spray.
Jelly Belly: Kirkland Signature Jelly Beans are rumored to be produced by Jelly Belly.
Humboldt Creamery: They reportedly make Kirkland Signature Ice Cream.
Niagara Bottling: The Kirkland Signature Water is believed to be bottled by Niagara Bottling.