Trippier curled a beautiful free-kick into the corner giving Croatia’s keeper no chance.
It leaves England less than 90 minutes away from their first World Cup final since 1966.
And his wonder striker sent Twitter into meltdown.
Presenter Piers Morgan said: “BOOOOOM!!!!!!!! 1-0 ENGLAND. What a start – Trippier you beauty.”
Another said: “The only players to score for England in World Cup semi-finals: Bobby Charlton, Gary Lineker, Kieran Trippier.”
And another added: “Kieran Trippier is the first defender to score for England in a World Cup semi-final.
“What a way to do it.”
Several users simply posted: “Bend it like Trippier” in a reference to former England skipper David Beckham.
Trippier has been one of England’s best players in their magnificent run in the tournament.
And another hailed his style.
He said: “45 minutes from Kieran Trippier’s haircut going mainstream.”
England are now under 45 minutes away from their first World Cup final since 1966.
But the nation faces an anxious wait for the final whistle.