National Cheeseburger Day 2025 is on September 18, 2025.

Quick Scoop: Key Details

  • Date: National Cheeseburger Day is celebrated every year on September 18, including in 2025.
  • Day of the week (2025): September 18, 2025 falls on a Thursday, so expect a weekday full of burger deals and promos.
  • Where it’s marked: It’s an unofficial food holiday widely celebrated across the United States by big chains and local burger spots alike.

A Bit More Context

Many restaurant chains run special promotions specifically tied to National Cheeseburger Day on September 18, 2025, such as discounted or special‑price cheeseburgers. Brands like Smashburger, McDonald’s, and others have highlighted September 18, 2025 as the day for their cheeseburger offers, which reinforces that as the recognized date for the holiday in 2025.

So if you’re planning ahead for “when is national cheeseburger day 2025,” circle September 18, 2025 on your calendar and watch for deal announcements as the date gets closer.

TL;DR: When is national cheeseburger day 2025? It’s on September 18, 2025. Information gathered from public forums or data available on the internet and portrayed here.