Wakefield will compete in the Women’s Super League in 2019.
Trinity will join Bradford Bulls, Castleford Tigers, Featherstone Rovers, Leeds Rhinos, St Helens, Wigan Warriors and York City Knights for next year’s campaign.
In the 2018 campaign, Wakefield were crowned Women’s Championship League Leaders and will become the eighth team in the Women’s Super League next term.
Trinity women’s coach Wayne Hirst said: “We are really looking forward to making the big step up to Super League next season.
“The girls really deserve the opportunity now. When I came in, it was the right decision to stay in the Championship for another year and after winning the Championship last season, I know they are ready.
“It’ll be tough but we’ve just got to work hard each week and that will pay off.
“We have a great mix of youth and experience in our current squad and the recruitment process for next year is already underway.”
The formation of the Women’s Super League, Women’s Championship and the England Women’s national side has led to an increase in the number of girls playing rugby league of around 40%, with the number of women players increasing by 11.6% from 2017.