The pair have been photographed together for the first time in three years, sparking rumours that they may be close to rekindling their romance.
The divorced couple were spotted at their son Charlie's Little League baseball game over the weekend.
Their daughter Samantha (five) was also at the sports day and watched her four-year-old brother pitch and bat as her parents chatted.
Elin (33) and Tiger were seen walking side by side at the sports day in Florida. They also sat on the grass with their children and looked relaxed with each other.
Nordegren wore a pair of gently flared boot cut jeans and a hot pink vest top with black baseball cap.
The doting mum took photos of her children as they participated in the event.
Golf superstar Tiger arrived at the event first with the pair's daughter and son while Elin showed up an hour later.
The two were extremely civil and onlookers said they seemed to be enjoying each others company.
But the get-together was brief, lasting only 30 minutes before Elin made a quick exit when she spotted the paparazzi.
The public display of unity comes after rumours that golf pro Tiger is desperately trying to win Elin back.
Speculation is rife that Woods has offered her a multi million dollar pre nuptial agreement if she considers marrying him again.
The couple divorced in 2010 after it was revealed Woods cheated on Elin with a string of women including a waitress, Vegas girls and New York socialite Rachel Uchitel.
Elin won €83m in the divorce settlement and while she has dated a few high powered men, including wealthy businessman Jamie Dingman, she is currently single.