English football was sent into a state of shock after it was confirmed the 49-year-old has passed away.
Edinburgh fell unexpected ill in Monday and was rushed to hospital having suffered a cardiac arrest.
The previous weekend he had been in Madrid watching his former club Tottenham in the Champions League final.
Leyton Orient released a statement announcing the tragic news of his death on Saturday evening.
“It is with profound and utmost sadness that Leyton Orient announces its manager Justin Edinburgh has passed away,” it read.
“Justin suffered a cardiac arrest last Monday and passed away on Saturday.
‘We are completely heartbroken by this tragedy’, said Orient chairman Nigel Travis. ‘All our thoughts and love are with the Edinburgh family and we know from the messages that have flooded into the Club over the last week that the wider football world will share our sentiments.
“The success that Justin brought to Leyton Orient was incredible, but more importantly the impact he had on us all as a winner and a wonderful, inspirational human being will be his legacy and will stay with us forever.’”
Edinburgh guided Orient to the National League title this season, securing their return to the Football League.
Edinburgh spent ten years at Tottenham as a player where he played 215 times.
Spurs released a statement, issuing their support to those close to him.
“We are deeply saddened and shocked to hear of the passing of Justin Edinburgh,” he said.
“Our heartfelt condolences and thoughts go out to his family and friends at this terribly difficult time as well as everyone that worked alongside Justin at Leyton Orient.”
Tributes continue to pour in for the manager.
Boxing promoter Eddie Hearn, who’s dad Barry used to own Orient, tweeted: “So so sad to hear the devastating news that O’s manager Justin Edinburgh has passed away. All our thoughts with his family.”
Salford City part-owner and Manchester United legend Gary Neville said: “My sincerest condolences to all your family Justin and to everyone at Leyton Orient. You’re a Champion that managed a team that played with your spirit.”
Glenn Hoddle tweeted: “Devastated to hear the very sad and tragic news regarding Justin. My thoughts and prayers are with his family and friends at this extremely difficult time.”
Gary Lineker also paid tribute: “Deeply saddened to hear that Justin Edinburgh has passed away. He was an excellent coach and a terrific fullback who was a delight to share a dressing room with and have as a teammate. Thoughts are with his family.
Edinburgh began his coaching career with Billericay Town back in 2003 as a player-manager before moving to Fisher Athletic.
He spent a season with Grays Athletic before moving onto Rushden and Diamonds.
The former defender then led Newport County back to the Football League before enjoying spells with Gillingham and Northampton.