Kennesaw
Events & Specials
B21 at Uber Speed
Download the UberEATS app and enjoy Burger 21 at the touch of a button! Now available at this location.
Featured Burger & Shake
S’mores Shake
A creamy blend of vanilla ice cream, Ghirardelli® chocolate sauce and graham crackers, topped with a toasted marshmallow, mini graham crackers and more Ghirardelli® chocolate sauce. Look for a campfire when you taste this classic!
#21 Southern Lucy Burger
Our Certified Angus Beef® burger is stuffed with American and Swiss cheeses, topped with crispy onion strings and bacon aïoli, placed on a bed of house-made tomato jam on a toasted brioche bun. This burger bursts with southern charm!
Charity of the Month
Burger 21 has donated over $127,000 to local charities since our opening. On the 21st of each month we donate a portion of our sales to our charity partner of the month.
Join us on August 21 as we donate 10% of our sales to
Adopt - a - Golden
Burger 21 has supported the following organizations as our Charity of the Month