Most Irish tailors will happily commission a suit in Italian wool or English worsted if that's what you ask for. They're imported, they're fine, the cloth libraries are full of them. But a substantial number of their buyers don't know that a shorter, cheaper, and often more interesting supply chain starts an hour up the road. This is that list.
Donegal tweed
The most famous Irish cloth internationally. Donegal tweed is a flecked, slubby, characterful wool traditionally woven in Donegal on handlooms in domestic outbuildings, though most production today is factory-woven (the handloom trade is small and specialist).
Weight: usually 11–16oz. That's winter cloth. A Donegal tweed suit is not an August suit.
Best for: weekend jackets, winter three-pieces, tweeds for weddings, shooting suits. A classic Donegal tweed sport coat is arguably the single most versatile thing in an Irish country wardrobe — it goes with everything from cords to moleskin trousers to dark denim.
Sources: Magee 1866 (the largest and most accessible supplier; their Donegal range is extensive), Molloy & Sons Donegal (smaller weaver, excellent herringbones and plains), McNutt of Donegal (widely available).
Magee Donegals — specifically
Worth calling out separately. Magee is Ireland's most visible tweed maker; their cloth library is in almost every Irish tailor's back room. Their "Donegal" line is distinct from pure handwoven Donegal but uses the same aesthetic vocabulary — the flecks, the earthy palette, the 12–14oz weight. It's the default "Irish tweed" most tailors will reach for if you say "something Irish."
If your budget allows, also ask your tailor to show you Magee's heavier-weight "Donegal Handwoven" line — it's closer to the genuine handloom article and dresses a suit with real presence.
Irish worsted
Less famous, and rarer, but worth knowing: Irish worsteds from smaller weavers and remnant lots. A worsted is a smooth, tightly-woven woollen cloth — the default cloth of a business suit. Most Irish worsteds in tailors' libraries are actually Italian or English. But if you ask specifically, you can sometimes access Irish-milled worsteds from smaller producers, and occasionally end-of-run cloth from Magee's worsted line.
Best for: a business suit that's Irish-made without being obviously tweedy. The differences from an Italian worsted are subtle — a slightly drier hand, sometimes a heavier weight for the same sett.
Kerry and Connemara wools
Smaller specialist mills. Kerry wool is often used for heavier jackets and outerwear rather than suits. Connemara wool ranges are most visible through Kilcarra (Ardara, Co. Donegal) and through smaller West of Ireland producers.
Best for: outerwear (overcoats, field coats), casual jackets, heavy-weight throws. Rarely the right choice for a formal suit unless you're specifically after that rough-hewn character.
Avoca, Cleo, and the souvenir edge
Worth flagging: "Irish cloth" as marketed to tourists — Avoca's lighter weights, Cleo's knits, the pastel-washed tweeds in gift shops — is a different segment of the trade. Lovely products, good for blankets, scarves, waistcoats. Not usually suit cloth. If your tailor shows you cloth that looks like it belongs in a gift shop, it probably does. Ask the weight; anything under 9oz is unlikely to hang properly as a jacket.
Linen and linen-blend from Northern Ireland
Often forgotten, but Northern Ireland (Ulster specifically) is historically one of the world's great linen-producing regions. Baird McNutt and other Ulster-linen mills are still active. For a summer suit — Ireland's rare but real warm weather — an Ulster linen or linen-wool blend is the local answer.
Best for: summer sport coats, waistcoats, shirts, summer trousers. Linen creases — that's the point — so don't commission in linen for an occasion where you need to look sharp at 10pm.
Harris tweed — not Irish
Common confusion: Harris tweed is Scottish (specifically Outer Hebridean), not Irish. Tailors will often show it alongside Donegal; it's a legitimate choice but don't order it thinking you're backing an Irish mill. It's a protected appellation — only cloth woven on the Isle of Harris is properly "Harris tweed."
Price differentials
Irish-milled tweeds and worsteds typically cost 10–25% less per metre than comparable imported English cloth and 20–40% less than comparable Italian cloth. On a bespoke commission this maps to roughly €200–500 of total budget variation — not enormous, but real.
The cheaper supply chain is also faster. Your tailor can usually have Magee or McNutt cloth in hand within a week. An Italian order is often 3–4 weeks.
How to actually ask for Irish cloth
At your first consultation, say: "Before you show me the Italian library, can we look at what Irish cloths you have?" A good tailor will pull out Magee, McNutt, and maybe one or two smaller mills without needing to rummage. If they can't or won't, that's a signal about where they buy from and what they prioritise — not a deal-breaker, but useful information.
A final note on sustainability
If a short supply chain matters to you, Irish cloth has a genuine case. Sheep in Donegal or Kerry, scoured in an Irish mill, woven in an Irish mill, cut and sewn in an Irish workshop, sold over an Irish counter. It's one of the few honestly-local supply chains left in Irish menswear. Worth considering, even if it's not your only deciding factor.