“We think Erin is one of the best young players in the world and we’re delighted that she’s extended her contract,” general manager Paul Green told the club website.
“Erin’s been developing very well since she’s been at the club, improving each year and we’re lucky to have her.”
Chelsea won the WSL title this year on average points per game after the league was curtailed because of the coronavirus pandemic.
Cuthbert says her ambition is to help the Blues to success both in Europe and at home next season:
“The Champions League is the creme de la creme of club football, we want to get there, we narrowly missed out two years ago and we want more this year,” she said.