Pub Home & About Us

A Great Pub in St Mary Street Cardiff

A visit to our pub in St Mary Street Cardiff will help you understand why our customers like to come back time and time again. Some come for the pub food, while for others it's our live music. The one thing everyone agrees on is that we serve the best Guinness® and countless other great draught beers and ales. Perhaps you should find us and see which it is for you.

What We are Famous For...

Close to the station and Millennium Stadium, the atmosphere on match days is always electric. So, if you don't make it into the ground you can always watch the game on our big screens. All day breakfasts and Sunday roasts are fantastic food favourites, as well as craicing Irish and Indie bands that play here four nights a week in our music room. Not to mention the regular open mic evenings we hold for budding stars. The music room has a capacity of 500 and is also available for hire for private parties, meetings and functions.

A Warm Welcome When You Visit

There's always something new to enjoy whenever you visit. The only constant is that we'll always make sure you get a warm welcome and a cold beer. Come in for the great food, the live music, or for a perfectly poured pint of Guinness® or chilled Magners.

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O'Neill's St Mary Street Cardiff - You're Guaranteed a Warm Welcome

A picture of an O'Neill's team member serving pints of Guinness.
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Opening Times

  • Monday to Wednesday: 11am - 12am
  • Thursday to Friday: 11am - 12.30am
  • Saturday: 10am - 1.30am
  • Sunday: 11am - 12am

What's On

Thu Feb 9 21:30

Goose- Live cover band

Fri Feb 10 21:30

Minis Chuff - Live cover band

Sat Feb 11 21:30

The Polar Bears - Live cover band

Sun Feb 12 21:00

The Undecided- Live Cover Band

Thu Feb 16 21:30

This River - Live Cover Band

Fri Feb 17 21:30

Free Beer - Live Cover Band

Sat Feb 18 21:30

Graffiti - Live Cover Band

Sun Feb 19 11:00

Smokin Aces- acoustic duo

Thu Feb 23 21:30

The Imposters - Live Cover Band

Fri Feb 24 21:30

The Undecided -Live Cover Band

Sat Feb 25 21:30

Smokin Aces - Live Cover Band

Every Day

Live Music

O'Neill's St Mary Street are keeping the atmosphere electric with live music every night from 9:30pm

Every Monday

Rob Cross

Every Tuesday

Smokin Aces - Acoustic Duo

Every Wednesday

Colum Regan

Acoustic Solo every Wednesday