The heaviest human head ever recorded was on a man named Jon Brower Minnoch.
The average human head weighs 8 to 11 lbs for an adult size head but Jon Brower Minnoch's head weight a bit more than that.
Jon Brower Minnoch's head had a cranial capacity of 1,980 cm³ (120 in³).
Although the shape of his skull was normal, the cranial capacity of a human skull averages at between 950 – 1,800 cm³ (57.9 – 109 in³) depending on age and body size.
There may be more larger sized heads out there but none have been recorded since then.
Your head does not weigh more than your whole body.
However your head is the heaviest body part.
Your head weighs around 8 to 11 lbs depending on the size of the head.
An average adult human weighs around 120 lbs to 130 lbs and your head only weighs in at around 8 to 11 lbs so the rest of your body actually weighs more than your head.
However your head is pretty heavy though when compared to other body parts and according to research your head is the heaviest body part.
A babies head weighs around 1 to 2 lbs and a child's head weighs around 4 lbs and a teenagers head weights around 7 to 8 lbs.
Your head is pretty heavy but not the heaviest part of the body and certainly not heavier than your whole body.