United States legend Sugar Ray Leonard called the fight "amazing" and said the opponents showed a "lot of heart".
"Great fight! #bigupyourself", he said. "Both fighters gave their best. A lot of questions answered by @anthonyfjoshua #JoshuaKlitchsko".
The thrilling nature of Joshua's win - who adds the WBA title to his IBF version - is likely to propel him to household-name status in Britain.
There might be a rematch however, after Klitschko expressed his interest in fighting Joshua again after the fight. Gotta respect it. Hold ur head high brother!
It was the toughest fight for the 27-year-old British heavyweight fighter and the only bout in his pro career that lasted 11 rounds.
He said: "This is where I started so I also donated some of my memorabilia in the hope that, when the children see it, it will inspire them to dream big".
According to Adedamola, Joshua's granddad once took out three men all by himself in a fight.
I might play in defence for United against Swansea - Mourinho
United's stalemate with City extended their unbeaten run in the Premier League to 24 games. But we will fight, that's for sure.
Smelling blood, Klitschko came back with a right hook in the sixth to knock Joshua down for the first time in his career, with the Watford-born fighter struggling to stay in the fight.
The event was headlined by a heavyweight slugfest between undefeated IBF titleholder Anthony Joshua and former divisional king Wladimir Klitschko.
Klitschko suffered his first stoppage defeat since 2004 when he was overwhelmed by Joshua's precision and power in a ferocious 11th-round assault.
"The best man won tonight and it's an incredible moment for boxing". One or maybe two more punches would have been enough and the fight would have been decided in his favour. Anthony was better today. It's really sad that I didn't make it tonight.
"Anthony Joshua challenge accepted", said Fury.
Joshua landed further blows to Klitschko as fans sensed he was closing in on an epic victory. Tactical round two, Wlad connected with a right hand early. Klitschko somehow managed to compose himself and came back strongly later in a wild round to nearly put Joshua down himself. Klitschko, in his 29th world title fight, seemed to be taking the advantage in the later rounds until the vicious uppercut sent him spinning across the ring.
Klitschko got up but was on unsteady legs and began swinging wildly.