Adolf Hitler is has been rumored to be a vegetarian infamous dictator
Most likely he was never a vegetarian.
Also, according to the references above, it appears that he never stopped eating meat completely for any significant length of time, although there is evidence that he reduced the amount of meat in his diet.
"Another aspect to consider here is that HappyCow's list is of celebrities & 'famous people', not 'infamous' ones.
We only have any mention at all here because if we didn't, we'd have a continuous flow of messages asking for us to list him.