The Atomic Koi Cocktail Lounge Fitchburg

03/10/2026

Happy hour just got better. Grab your crew, start a tab, and let the good times roll all evening long. See you at the bar!🍸

$2 OFF taps at Atomic Koi Cocktail Lounge from 4–7PM every Tuesday!🍻

02/27/2026

The weekend is finally here and the drinks are just getting started 🍸
Join us at Atomic Koi all weekend long for cocktails, good vibes, and even better company!

02/05/2026

Come join Izzi for the superbowl this Sunday! We will be open an hour early at 5pm!

01/30/2026

12/12/2025

🎉 NEW YEAR’S EVE AT ATOMICK KOI 🎉
Ring in the New Year at Atomick Koi Cocktail Lounge 🐠✨
🎧 Live DJ all night (DJ STEEL)
🍸 Craft cocktails & late-night vibes
🚫 NO COVER
🕛 Countdown to midnight with the best crowd in town

Slip into something stylish and toast to new beginnings.
Dec 31 • Party starts at 8PM

11/25/2025

We will be close thanksgiving day, we apologize for any inconvenience. Happy holidays!

10/24/2025

No cover. Just killer vibes!👻👻👻
Costume contest (win a scary-good prize!)
Live DJ spinning all night!
Bring your best costume and your creepiest dance moves!

07/04/2025

Happy 4th of July!!! Yes, we are open here at The Atomic Koi! Come down and celebrate the night with us!!!

04/20/2025

Happy Easter! Come in and join Izzi for a drink! We are open until 12am!

03/21/2025

New THC seltzers! Ginger Lime, Strawberry Lemonade, and Pineapple Mango by Honey Bee with 4.2 mg of THC for only 7 dollars!!

03/17/2025

Hello all you wonderful people and happy St. Patrick's Day! Come down to the Atomic Koi and celebrate the holiday with $4 tullamore D.E.W. shots, $4 dollar Guinness pints, swag giveaways, and some Irish music!

03/14/2025

Hey Atomic Koi followers, we have created a new page to keep everyone up to date on future specials, events, and features! Please follow our new page!!!