O'Neill's St. Mary Street Cardiff

O'Neill's St. Mary Street Cardiff O'Neill's is Cardiff's premier bar providing excellent quality meals with live music Irish Bar in the heart of Cardiff

Blow away your weekend blues, we’ve got you covered from food offers to Happy Hour with a twist of Quiz Night, our Quiz ...
13/07/2026

Blow away your weekend blues, we’ve got you covered from food offers to Happy Hour with a twist of Quiz Night, our Quiz is Free Entry and we have a £50 bar tab up for grabs

11/07/2026

Matchday vibes ⚽️🏴 Ready for England 🏴󠁧󠁢󠁥󠁮󠁧󠁿 vs Norway 🇳🇴 ! Join us at O’Neills St Mary Street for every kick, pint, and moment. 🍻🙌

11/07/2026

🤫 ONE. MORE. PARTY. TO. REVEAL... 👀🔥

We've already announced some HUGE daytime parties... but we've still got ONE MORE event to unveil! 🎉

The question is... what do YOU think it is? 🤔

🎤 Is it a legendary throwback?
💃 A singalong spectacular?
🎶 An iconic dance party?
🌈 Or something nobody's expecting?

Drop your guesses in the comments below! 👇 The closer you are, the more impressed we'll be... 😏

Trust us... this one's going to be worth the wait! 🚀

👀 Announcement coming soon... Stay tuned!

Another great weekend of nations rugby, join us for all the action, our air conditioning is on full in & our upstairs sp...
11/07/2026

Another great weekend of nations rugby, join us for all the action, our air conditioning is on full in & our upstairs sports bar will be open for all Rugby followed by England Vs Norway at 10pm.

🌴🔥 **DALE! Mr. Worldwide Is Taking Over O'Neill's Cardiff!** 🔥🌴🎤🌎 **Get ready for the ultimate daytime party experience!...
10/07/2026

🌴🔥 **DALE! Mr. Worldwide Is Taking Over O'Neill's Cardiff!** 🔥🌴

🎤🌎 **Get ready for the ultimate daytime party experience!**

**Pitbull UK – The UK's leading Mr. Worldwide Tribute** is bringing the Miami heat to the **O'Neill's Upstairs Live Room** for an unforgettable afternoon of live entertainment, massive anthems and non-stop party vibes! ☀️🎶

Experience an incredible **live Mr. Worldwide tribute performance** featuring all the biggest hits including **Fireball, Give Me Everything, Timber, Hotel Room Service, International Love** and many more! 🎤🔥

Keeping the party going all afternoon, our **live DJ will be bringing you the biggest party hits, club classics, singalongs and dancefloor anthems** to keep the energy high from start to finish! 🎧💃🕺

🌴 Think Miami vibes, sunglasses, VIP energy and your best party attitude — because this isn’t just a daytime event…

✨ **This is Mr. Worldwide. This is Day Fever. DALE!** ✨

📅 **Saturday 12th September**
🕛 **Doors Open: 12:00pm | Party: 12:00pm – 5:00pm**
📍 **O'Neill's Upstairs Live Room, Cardiff**
🔞 **Over 18s Only**

🎟️ **Tickets are available exclusively on Fatsoma and are expected to sell fast!**

👇 **Grab your tickets, tag your party crew and get ready for Cardiff’s hottest daytime party!** 🌎🍾🔥

🎉 **CARDIFF... ARE YOU READY?** 🎉🚨 **We're bringing you THREE epic daytime parties starting this August Bank Holiday Wee...
08/07/2026

🎉 **CARDIFF... ARE YOU READY?** 🎉

🚨 **We're bringing you THREE epic daytime parties starting this August Bank Holiday Weekend!** 🚨

First up... 🎤✨ **MOTOWN DAYTIME FEVER** ✨🎶

📅 **Sunday 30th August**
🕐 **Doors open at 1PM**
📍 **Upstairs Live Room at O'Neill's Cardiff**

https://fatso.ma/f62hr

Join us for an unforgettable afternoon packed with the biggest Motown classics, an incredible **LIVE singer** performing all your favourite hits, an **epic DJ** keeping the dancefloor buzzing, and feel-good vibes from start to finish! 💃🕺🎶

🎟️ **This is a TICKET ONLY event**, and spaces are limited, so don't miss out!

👇 **Secure your tickets now using the link below before they're gone!** 👇

https://fatso.ma/f62hr

🙌 Tag your Motown crew, smash that ❤️ button if you're coming, and share this with the friends you'll be dancing and singing along with all afternoon!

World Cup Quarter Final ⚽️🌍🏆England vs Norway 10pmSaturday 11th JulyOur upstairs Sports bar will be open for BOOKINGS ON...
06/07/2026

World Cup Quarter Final ⚽️🌍🏆

England vs Norway 10pm
Saturday 11th July

Our upstairs Sports bar will be open for BOOKINGS ONLY, doors open 8pm, no booking no entry

Last entry 9:30pm

Large & small groups available ✅
Lots of Big screens with excellent viewing from all tables ✅✅
Table service throughout the match 👌👌⚽️

Hit the link 👇 to book your seats today

https://www.oneills.co.uk/national-search/wales/st-mary-street-in-cardiff

Address

85-87 Saint Mary Street
Cardiff
CF101DW

Opening Hours

Monday 10am - 11pm
Tuesday 10am - 11pm
Wednesday 10am - 12am
Thursday 10am - 12am
Friday 10am - 1am
Saturday 10am - 1am
Sunday 10am - 11pm

Telephone

+442920664103

Website

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