The Canberra pub will host its annual Beard and Beer Day to not only raise money for Lifeline, but also decide which Canberran has the best beard.

It's not an easy thing to judge, managing director Peter Barclay says. You want one that when you look at it, you're happy for it to represent the capital.

That's part of the reason why they've asked the help of expert judges from Canberra's Tino's Barbers and Truefitt & Hill, as well as the Queenslander behind Bearded Chap beard balm, who will be flying down to take on adjudication duties.

"They'll be looking for the attributes ... including a nice thick beard, good colour, good styling, well-groomed, someone who has put conditioner in there, well shampooed, no smelly beards - you know, a really nice beard that makes you say 'Wow, that is a beard'," Barclay says.

Joining the top gong, there will also be prizes for Canberra's longest beard, the fullest beard and the best styled beard, as well as the best bearded team.

All up there is more than $5000 worth of prizes to give away, including $500 for the best beard of 2019 and two tours of Sydney's Young Henry's Brewery for seven people.

It's a celebration of facial hair that seems appropriately placed at King O'Malley's. After all, the pub's namesake had a very fine beard himself.

The pub itself has also had a long history celebrating facial hair, with the team taking part in Movember since it began.

"Now beards have become more popular - you don't see too many moustaches out there - we thought it was a good thing to do," Barclay says.

"So keeping in honour of King O'Malley's fine beard, we created the competition to find Canberra's best beard. It's been a lot of fun every year and there's a lot of comradery."

And it's a comradery which - while created by beards - is fuelled by beer. What's more, the beer on the day will be limited edition.

StoneAge has brought out a beer called Beardy Brown, while - to coincide with the 50^th anniversary of Neil Armstrong walking on the moon - there will also be a special beer called Dark Side of the Moon, and Bentspoke's Descent on tap.

But at the core of the event is the fact it is a charity event.

"We just think that there's a lot of need for the services [Lifeline] provide in the community," Barclay says.

"There are a lot of people who have anxiety and stress and they're a sort of organisation that people feel comfortable with and especially with men in the room, and their families, it's an opportunity for them to come together as friends and think about it.

"And [it makes men] think what does it mean to be a man? You've got responsibilities to look after your family and I think whatever happens to you affects more than yourself. It affects your children and your parents and your partner, and your work colleagues and all that sort of thing."

Beard and Beer Day is at King O'Malley's on Sunday from 11am to 11pm.