In Dublin, the Guinness harp appears above pub doors as well as on the gates of St James’s Gate. But does a national emblem still make it the best-selling beer? The question has resurfaced since Diageo, the brand’s owner, published its quarterly results on 5 November 2026. The group reported global growth for Guinness while, in the same document, noting a decline in its beer sales across the Great Britain–Ireland market.
The latest precise public benchmark we found put Guinness at the top of Ireland’s beer brands in 2025. The November results do not show that it has lost that position. Nor do they provide an Irish ranking recent enough to confirm that it retains it.
Guinness in Ireland: where does the one-in-three-pints figure come from?
A measure of sales in licensed venues, not all beer purchases
At a 2025 investor presentation, Diageo Ireland described Guinness as Ireland’s leading beer brand and credited it with around one in every three pints sold in licensed venues, based on CGA data running to March 2025. The scope covers on-trade consumption: pubs, restaurants and hotels. It does not include beer bought in shops to drink elsewhere.
That figure says much about the brand’s presence at the bar, but it cannot measure its supermarket share or compare Dublin, Cork and Belfast. And because it comes from a presentation by its owner, its date and scope should be kept in mind whenever it is cited.
Lager still outsells stout, even if Guinness leads the brands
There is no contradiction. Guinness is a brand; lager is a beer category encompassing many brands. In its review of the Irish market for 2024, Drinks Ireland put lager’s share at 57.2% and stout’s at 35.9%. The leading name in the ranking can therefore be a stout, while lagers, taken together across all brands, sell more.
What the November 2026 results really change
A regional sales decline is not enough to establish a loss of market share
The results published by Diageo on 5 November cover the quarter ended 30 September 2026. The group reported a slight decline in its beer sales across Great Britain and Ireland, which it attributed to warmer-than-usual weather and competitive pressure. The document does not provide a figure for Guinness alone in the Republic of Ireland, nor does it compare brands in that market alone.
A brand can sell less than it did a year earlier and remain in first place, especially if sales across the sector are also falling. To establish whether Guinness has genuinely lost ground to a competitor, comparable figures would be needed for the same period, the same outlets and the same territory. The November results do not provide them.
Abroad, the picture is different
In the same results, Diageo reported double-digit growth for Guinness in Africa and across Germany, Austria and Switzerland. Strong performance abroad says nothing about the rankings in Irish pubs, but it explains why headlines reporting Guinness growth and others referring to weaker sales near its birthplace can both be true at the same time.
From Dublin to Cork: what the pub taps tell us
St James’s Gate for the history, Cork for a broader view
In the Liberties, the Guinness Storehouse traces the history of Dublin’s brewery and shows how it built its image, from brewing to advertising. In Cork, the names Beamish and Murphy’s tell another brewing story. Our guide to Irish stouts to discover offers pointers for telling these beers apart, along with O’Hara’s stout.
If you are looking for a particular beer, check the taps and ask at the bar what is being served on draught that day. It is a better guide to choosing where to stop than a national ranking: just a few streets apart, two pubs can tell very different stories about Irish beer.
