Birmingham City have signed Brazil forward Ivana Fuso for a club-record fee as well as South Korea players Cho So-hyun and Choe Yu-ri.
Fuso, 22, arrives at the Women's Championship club from Manchester United on a two-year contract with an option of a further year.
Choe, 28, has agreed a two-year deal with an option of one more after moving from Hyundai Steel Red Angels.
Midfielder Cho, 35, signed a one-year deal with an option of 12 more months.
Brazilian Fuso scored once in 12 games on loan at Bayer Leverkusen last season.
"I'm really excited and I can't wait to get started," she said.
"They have big aims and they want to achieve big things. I want to challenge myself and I believe in this project. I believe in what this team can do. I needed a new challenge and a fresh start."
Cho left Women's Super League side Tottenham, where she made 35 appearances in 18 months, in June.
She holds the joint record for most appearances for South Korea's women's team with 148 and scored against Germany at this summer's Women's World Cup.
Her South Korea team-mate Choe has scored nine times in 54 appearances for her country.
The forward scored eight goals for South Korean side the Red Angels last season as they secured their 10th consecutive WK League title.
Take a look behind the scenes at some of the most extraordinary hotels: From the ultimate in luxury to jaw-dropping locations
Vaping, what's the harm?: Rachel Burden investigates the youth vaping phenomenon