Miedema has signed a new deal with the Super League club.
The 25-year-old Netherlands forward has scored over 100 goals in his career.
Miedema is the league's record goalscorer and was named the BBC Women's Footballer of the Year 2021.
It's a boost for the team after the boss signed a contract extension.
The length of Miedema's new deal has not been specified.
The most beautiful thing about the game is building something with a team and with people around you that you really want to be around, according to Miedema, who scored 14 goals in the WSL.
I feel like I have that at Arsenal. I feel like winning titles with the club will mean more to me than winning them with another club. That is what I hope to achieve with the club.
iv is a stellar talent and a hugely important player for this team, so it is great news that she is staying with us.
As a club, our ambition is to win titles and compete at the highest level, and we know we can do it together.