Costco’s Kirkland Signature diapers are currently made by First Quality , the same company that produces Cuties diapers, after previously being manufactured by Kimberly-Clark (the parent company of Huggies).

Quick Scoop: Who makes Kirkland diapers?

  • As of January 2025, Kirkland Signature diapers switched manufacturers from Kimberly-Clark (Huggies) to First Quality.
  • First Quality is a large hygiene-products maker based in the U.S. and also makes Cuties and some other store-brand diapers.
  • Costco does not publicly list its manufacturing partners, but multiple independent reports and coverage confirm the First Quality partnership.

Brief timeline

  1. For many years, Kirkland diapers were produced by Kimberly-Clark, using technology and design similar to Huggies.
  1. In late 2024, reports emerged that Costco would change manufacturers, with First Quality set to replace Kimberly-Clark starting January 2025.
  1. By early 2025, the new First Quality–made Kirkland diapers began appearing in Costco warehouses across the U.S.

What this means for parents (quick notes)

  • Some parents say the newer diapers feel thinner and slightly less absorbent than the old Huggies-made version, while others find them perfectly usable and appreciate the price.
  • First Quality has experience making “national brand equivalent” diapers for retailers, so the product is designed to hit a balance between performance and value.

Bottom line: If you’re wondering “who makes Kirkland diapers” today, the answer is First Quality , not Huggies/Kimberly-Clark anymore.

TL;DR: Kirkland diapers used to be made by Kimberly-Clark (Huggies), but since early 2025 they’ve been made by First Quality , the company behind Cuties diapers.

Information gathered from public forums or data available on the internet and portrayed here.