Who makes Kirkland Signature Aged Parmigiano Reggiano (24-month DOP wedge and whole wheel)?
As of August 1, 2026, the manufacturer of Kirkland Signature Aged Parmigiano Reggiano (24-month DOP wedge and whole wheel) is Formaggi Zanetti (Zanetti S.p.A.), per on-label, first-party, or executive statement evidence.
The common claim
What most answers say — and what the evidence supports
Top-ranking answers name Zanetti, and the evidence is on the package: the Kirkland Signature aged wedge and whole wheel carry a Formaggi Zanetti co-brand on the back label alongside the Kirkland label on the front, per Tasting Table and Chowhound. Formaggi Zanetti (Zanetti S.p.A.), an Italian cheese house operating for over a century and Italy's largest exporter of Parmigiano Reggiano, is the named producer and ager. The one nuance the top answers get right is scope: only the aged wedge and whole wheel carry the Zanetti name — Kirkland's pre-shredded parmesan does not, so the attribution holds specifically for the wedge and wheel.
Evidence & sources
Every source is graded on the six-tier rubric and archived, so the citation holds even if the original moves or paywalls. The tier badge grades the source; the status grades our confidence in the maker.
Tier 4
On-label co-brand, reported as a directly checkable label fact: 'The company name, Zanetti S.P.A., is on the package label, along with the two seals that guarantee the cheese is genuine Parmigiano Reggiano from a Protected Designation of Origin, or PDO.' Also frames the relationship as a partnership — 'the retail giant would partner with Zanetti, Italy's largest exporter of Parmigiano Reggiano ... under the Kirkland label.' Graded tier 4 as documentation of an on-label co-brand (the tier-4 evidence class); the load-bearing fact (Zanetti printed on the wedge) is in-store verifiable and reported identically by Chowhound. Upgrade/verification path: a first-party photographed back label or a Costco listing that names Zanetti (Costco's own PDP title reads only 'Kirkland Signature Parmigiano Reggiano').
Tier 4
Independent corroboration of the same on-label co-brand and the format scope: 'aged Parmigiano Reggiano wedges feature both the Kirkland label on the front and a Zanetti label on the back,' and 'the brand behind Kirkland's Parmigiano Reggiano is Formaggi Zanetti. The Italian brand has been operating for over a century and produces, matures, and distributes cheeses from several regions in Italy.' Scope caveat carried by this source: 'pre-shredded cheeses ... don't carry the Formaggi Zanetti name' — so this attribution covers only the aged wedge and whole wheel, not Kirkland's shredded parmesan.
Frequently asked
Who makes Kirkland Signature Parmigiano Reggiano?
Is the pre-shredded Kirkland parmesan also made by Zanetti?
How can I tell which Italian dairy actually made my wheel?
Is Kirkland Parmigiano Reggiano real DOP cheese?
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