Double Olympic medallist Jazz Carlin will carry the Wales flag at the Commonwealth Games 2018 opening ceremony on the Gold Coast on 4 April.
The defending 800m freestyle champion competes in her fourth Games having won gold and silver in 2014 in Glasgow and silver and bronze in Delhi in 2010.
The 27-year-old leads a team of more than 200 at the opening ceremony in the Carrara Stadium.
"I'm honoured and so excited to have this opportunity," said Carlin.
Carlin won two silver medals at the Rio Olympics in 2016 and will be competing in three events on the Gold Coast, the 400m, 800m freestyle and the 4x200m freestyle relay.
Carlin first appeared at the 2006 Games in Melbourne aged 15.
"I always feel as though it's an honour to compete for Wales so this has definitely kick-started my experience here in Gold Coast," she added.
"Training has been going really well. This will be my fourth Commonwealth Games so I'm starting to feel like one of the older ones now!
"The older you get, the more you appreciate the experience of being at the games. I have fond memories of Glasgow, which was an incredible event. Obviously like any competition, I'm aiming for a podium.
"We did a tough block of training and the last few weeks have been about going easy in the lead up to competition.
"I'm really excited and can't wait for it to start."
Former world champion triathlon Non Stanford was named as the team captain.