Ken Owens will captain Wales in the Six Nations and Warren Gatland has included four uncapped players in his 37-man squad.
Hooker Owens takes over as skipper from Justin Tipuric, who led the side for the Autumn Nations Series encounters last year.
The fit-again Wyn Jones, Dewi Lake and Liam Williams return in Gatland's first squad since he returned for a second spell as head coach, replacing the sacked Wayne Pivac.
New Zealander Gatland has recalled Leon Brown, Rhys Carre, Rhys Patchell, Aaron Wainwright, Rhys Webb and Owen Williams.
The uncapped Rhys Davies, Keiran Williams, Mason Grady and Teddy Williams also got the nod, while Rio Dyer, Joe Hawkins and Dafydd Jenkins are in line to make their Six Nations debuts.
Gatland said of naming Owens as captain: "Ken's incredibly experienced and a passionate Welshman – it means a lot to him to play for Wales. He's also very popular with the players.
"He came back from injury and was absolutely outstanding during the autumn campaign. Probably, if you're picking a team at the moment he's the number one in that position. But he's going to have some competition with Dewi and Bradley [Roberts] as well, which is going to be great."
Gatland has completed his coaching team by appointing Jonathan Thomas, who will take responsibility for the contact area.
Wales face Ireland at the Principality Stadium in their first match of the tournament at the Principality Stadium on February 4.
Wales Six Nations squad:
Forwards: Rhys Carre, Wyn Jones, Gareth Thomas, Dewi Lake, Ken Owens (captain), Bradley Roberts, Leon Brown, Tomas Francis, Dillon Lewis, Adam Beard, Rhys Davies, Dafydd Jenkins, Alun Wyn Jones, Teddy Williams, Taulupe Faletau, Jac Morgan, Tommy Reffell, Justin Tipuric, Christ Tshiunza, Aaron Wainwright.
Backs: Kieran Hardy, Rhys Webb, Tomos Williams, Dan Biggar, Rhys Patchell, Owen Williams, Mason Grady, Joe Hawkins, George North, Nick Tompkins, Keiran Williams, Josh Adams, Alex Cuthbert, Rio Dyer, Leigh Halfpenny, Louis Rees-Zammit, Liam Williams.
Ex-All Blacks coach Hansen fires 'chokers' warning to Ireland ahead of World Cup
Former New Zealand coach Steve Hansen warned in-form Ireland they still have a huge point to prove at the Rugby World Cup this year.
Andy Farrell's side completed a Grand Slam against England on Saturday, sealing a Six Nations crown and reaffirming their place as the world's number one team.
But with France 2023 looming in just under half-a-year, they will have to overcome their own history, having never progressed beyond the quarter-final stage.
Hansen, who knocked Ireland out in the last eight with the All Blacks four years ago in Japan, feels they must defy their own tournament reputation to triumph.
"They are going well, [are] ranked number one in the world, and they have had a great year so far," he said.
"Every time a team is number one in the world, you have got to consider them to be a World Cup contender. But it is a tough tournament to win.
"They have seemed to struggle a little bit at World Cups. If it was the All Blacks, they would probably be called chokers. They have come a long way, they believe in themselves. They are a very good side.
"So they are definitely a contender. But they will have to overcome the pressure of not having gone past the quarter-finals before, and there will be a lot of pressure involved in that.
"If they get through to the semi-finals, then they are in new territory. That is something they will have to deal with that they've never dealt with before, and it is always hard to deal with something you haven't dealt with before."
Ireland open their campaign against Romania on September 9, before they face Tonga, Scotland and reigning champions South Africa.
Farrell warns Ireland have 'a long way to go' to reach their peak despite Grand Slam triumph
Andy Farrell believes Ireland have "a long way to go" before reaching the peak of their powers despite winning the Grand Slam.
Ireland were crowned Six Nations champions on Saturday after beating England 29-16 at the Aviva Stadium.
Farrell's side are top of the rankings following 10 consecutive victories and will be expected to mount a strong challenge to win the Rugby World Cup for the first time in France later this year.
Yet the Ireland head coach is demanding more from his players after they celebrated a fourth Grand Slam triumph.
"I said to you in New Zealand, 'now this was the start of our World Cup year'," Farrell said.
"The most pleasing thing is that we've continued to be successful. To find a way. Everyone was nervous about that except us.
"This is part of the journey, isn't it? Obviously this stands on its own right, as does the New Zealand tour.
"But it's part of the journey of us as a group going forward into a World Cup. Like I said, we'll get two or three months pre-season training for the first time together and I expect ourselves to be better obviously because of that.
“We've carried on winning, is that the yardstick? I don't know.
"We just go on the performances and the performances were pretty good in New Zealand and we've continued to again find a way.
"It's never been perfect, but the game is not like that, so the mental strength of our game and large parts of our game are in a good place.
"There's a long way for us to go for us to be at our best which is a great sign."
Borthwick 'can't do anything about the past' as England plot post-Six Nations success
Steve Borthwick says he "can't do anything about the past" with England, but the coach is looking forward to a lengthy World Cup build-up after their Six Nations efforts.
The former Leicester Tigers boss took the reins of the national team from Eddie Jones in December, less than a year out from the showpiece tournament in France.
With England having struggled at the end of 2022 under the Australian, Borthwick was unable to completely reverse the rot in a Six Nations campaign that ended with a 29-16 loss to Ireland.
But with just under half a year until they open their World Cup account against Argentina, he intends to use his first taste of the job to put their recent ghosts firmly out of mind.
"We'll debrief this Six Nations thoroughly, take what lessons we take from it and be clear on our direction going forward," he said.
"The team is not where it could be and, while we're judging against teams that have used this four-year cycle tremendously well, that's not the position England are in.
"I can't do anything about the past. I intend we will be working really hard to put England in the best position possible, and I'm excited about what these players can do for the World Cup.
"We get a number of weeks to prepare. Players will then be conditioned for international rugby and understand how we want to play.
"This has been five intense games, and effectively you then have one main training session a week.
"I'm looking forward to having the opportunity to work with the players for a longer period of time. I think we've seen some growth here, but we will see more in that preparation period."
In addition to facing Argentina, England also play Japan, Chile and Samoa in Pool D later this year.
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