A heroic 15-year-old Florida boy died saving his little sister from a home intruder, authorities say.

Tragic teen Khyler Edman was home with his 5-year-old sibling in Port Charlotte on Thursday afternoon when a druggie ex-con burglarized them, police said, according to Newsweek.

When police arrived, they found 27-year-old suspect Ryan Cole nearby with stab wounds on his hands and side — and the boy dead inside.

“A violent encounter ensued where we believe that the teenager was trying to protect the home and protect their younger sibling,” Charlotte County Sheriff Bill Prummell said.

Khyler’s grieving family called the teen — an honors student and high school sophomore — “his sister’s keeper.

“There is no hero that can amount to Khyler,’’ family rep Crystal Stone said, according to WINK-TV.

Stone set up a GoFundMe to help the family with funeral and other expenses. Its goal was set at $25,000; by Tuesday morning, it had reached $32,373.

“This is not going to only give Khyler the burial he deserves this will allow Kyhler’s mom and 5 year old sister be able to get into another house so they aren’t faced with having to relive the traumatic experience over again,” Stone wrote.

“Khyler was a hero protecting his sister but please continue to keep her in your prayers as she witnessed this.”