3201 4th Street North
St Petersburg, FL 33704
Fri & Sat: 11AM-10PM
Events & Specials
Summer Shake Up
3 refreshing flavors, Key Lime Pie, Pineapple Upside Down, and Apple Crumble, make a comeback all summer long #SummerShakeUp- But Get them before they’re gone!
Stop in for your chance to win! Now through August 25th every time you spend $5 or more you’ll receive a Scratch off ticket with a chance to win either a free shake or fries.
Valid on your next visit to the St.Petersburg Burger 21 location only.
The Impossible™ Burger Has Arrived!
Check out our vegan plant based Impossible™ patty, 21 sauce, red onion, lettuce,
vine-ripened tomato, toasted brioche bun. Only at the St. Petersburg Burger 21 Location!
Limited Time Only
#21 Cuban Burger
An omage to where Burger 21 began, Tampa, FL. Our house-made mojo seasoned pork patty sits a top our mustard based sauce, on a bed of pickles and a slice of Swiss cheese. The patty is then topped with grilled ham and salami, more Swiss cheese and drizzled with our signature 21 sauce for a reinvented version of a classic sandwich.
Cinnamon Bun Shake
A rich blend of vanilla ice cream, walnuts and cinnamon
maple sprinkle. Topped with a delightful house-made
cinnamon swirl for dunking. Yum!