Both sides will take strong teams into tomorrow's final, and captain Ashton Turner said confidence was high within his group.
"The feeling in this Western Australian squad has been as good as I can remember," he said.
"There’s a lot of energy around, there’s a lot of guys playing really good cricket and I think we’ve got a great mix between senior and youngers players in the team.
"I think we deserve to be playing in a final and we can’t wait for the opportunity to play Queensland tomorrow."
WA and Queensland have met six times in the Domestic One-Day Cup final dating back to nearly 50 years ago, with the honours split evenly between the two.
"We have really high expectations of ourselves, we go into each competition believing that we’re the best side and should be right in contention," Turner said.
"We’ve done enough to get ourselves into this position and to give us an opportunity.
"It’s awesome to be continuing a great tradition for Western Australia in being successful in 50-Over cricket.
"I think we owe it to ourselves and our fans to come out and play well tomorrow."
The One-Day Cup Final gets underway at 8am AWST tomorrow, with the match broadcast live on Fox Cricket.
Western Australia squad: Ashton Turner (c), Ashton Agar, Cameron Bancroft, Hilton Cartwright, Nathan Coulter-Nile, Cameron Green, Liam Guthrie, Matt Kelly, Shaun Marsh, Josh Philippe, Jhye Richardson, D’Arcy Short, Marcus Stoinis.