Chelsea striker Kerr becomes the first back-to-back winner of the Women’s Footballer of the Year.
The Australian polled twice as many votes as Rachel Daly of Aston Villa and England, who edged out Chelsea’s Lauren James (four votes). In total 25 different players got votes in the WFOTY poll.
The Australia international has scored 10 goals in 18 games in the WSL and earlier this month scored her 50th league goal in England.
Since her arrival at Chelsea during the 2019/20 season, Kerr has helped Emma Hayes' side secure three league titles, two FA Cups and two League Cups.
She has the chance to add to those honours this season with Chelsea chasing a double. The Blues are currently one point behind WSL leaders Man Utd with a game in hand in what has already been a thrilling title race.
Hayes' side, who lost to Arsenal in the League Cup final and were knocked out by Barcelona in the semi-finals of the Women's Champions League, also face Manchester United in the FA Cup final on Sunday - a game that will be played at a sold-out Wembley for the first time - as they look to complete another successful campaign.
She will also captain Australia this summer as she looks to lead the host nation to victory at the Women's World Cup on home soil.
'Kerr's a player we can rely on'
Chelsea boss Emma Hayes to Sky Sports on Kerr's contribution this season:
"She's such a key player for us.
"Losing Pernille [Harder] and Fran [Kirby] for such a large part of the season, we've lost something like 66 per cent of our goal contributions, so Sam has had to find different ways to be involved.
"It's not just about coming up clutch in big moments, it's all the other stuff. She's a great team player, she doesn't always get the recognition for the work she does out of possession.
"She's a super talent, someone who I think has adapted brilliantly. She's become a player we can rely on."