Buffalo Wild Wings: On Wednesday, the participating locations are offering any burger at half price, including the All-American Cheeseburger and the Triple Bacon Cheeseburger (offer good for takeout or delivery using the promo code GOBURGER on the app; not valid for dine-in orders).
Burger King: Free hamburger with a $1 purchase for rewards club members on Wednesday.
Dairy Queen: Through Sunday, rewards club members who buy Signature Stackburger get a second one free. The deal is available on the DQ mobile app.
Perkins: The chain’s National Hamburger Month special continues through Saturday. The Great American Burger Trio — a cheeseburger, fries and pie— costs $9.99.
Shake Shack: Through Sunday, get a free ShackBurger with a $10 or more purchase (order in the Shack app, online or in-Shack kiosks; use code BURGERMONTH).
Smashburger: On Wednesday, any single burger costs $5.28 (offer good at participating locations nationwide; redeem the deal in-store or through Smashburger’s website and app with the code JUST528).
Wahlburgers: Through Thursday, get half off all Brothers’ Choice Burgers, the Our Burger, BBQ Bacon and O.F.D. using the code HAMBRUGERDAY online or in the app (offer good at participating U.S. locations; not valid on third-party delivery systems).
Wendy’s: From Wednesday through Sunday, customers using the Wendy’s app can get a Jr. Bacon Cheeseburger for a penny with any other purchase.
White Castle: Throughout May, the chain is celebrating National Hamburger Month with special offers, including a “Slider-bration” event where sliders sell for 25 cents, along with other promotions.