Who is the hardest puncher in the world???

[TBear]

George Foreman (still!)

[ModernTalking]

Chuck Norris

[jjbj2]

Marcos Maidana - Junior Welterweight

Manny Pacquiao - Welterweight

Yuri Gamboa - Featherweight

[Rapid Counter]

Paulie Malignaggi at 147 is devastating!!!!!

[ThePunchingBag]

Some old chinese dude in Hong Kong who has spent his entire life working on the perfect punch with 100% weight/speed efficiency and breaks through iron boards from a distance of 1 inch regularly.

[GoogleMe]

Wladimir Klitschko

[PD21]

At heavyweight probably Wvlad. He is a more correct puncher than his brother

Pound for pound Nonito Donaire deserves a mention. That guy has scary power and delivers his punches quickly too.

[Grinderman]

I'll go along with the opinion of Shannon Briggs: Vitali Klitschko.

"Vitali hits CRAZY hard!" -- Shannon Briggs

[Jupiter Jab]

Isaac Frost