The 52-year-old, known locally as Tam, was wedged in the plastic bin in Castlegate public square for over 15 minutes on Sunday evening before being cut free.
Firefighters used an electric saw to cut around the top of the litter bin before the man was taken to the Aberdeen Royal Infirmary where he was treated for facial injuries.
An onlooker in the square called 999 to report the incident as pictures of the episode began circulating on the internet.
‘He couldn’t move at all – his head was really stuck in the bin tight and he was shouting for help,’ one witness told the Daily Mail.
‘The fire brigade came pretty quick and took the top off the bin, but it took at least 15 minutes and the guy was in a bit of a panic by the sound of it.’
A Grampian Police spokesman said: ‘We are unsure what he was looking for or what he had lost – and whether he found it.
‘We can also confirm that there were no criminal charges resulting from the incident.’
Man with head stuck in a bin freed by firefighters in Aberdeen | Metro.co.uk