Why Italy - When becoming a naturalized citizen of Italy, do you have to renounce all past citizenships?

When becoming a naturalized citizen of Italy, do you have to renounce all past citizenships?

I know the U.S. requires naturalizing citizens to, but the United Kingdom does not, for example. Does Italy?

the US does not ask you to renounce your citizenship,you are allowed to have more than one citizenship, and Italy does not either.
No. Italy does not require for u to give up ur US citizenship. I am from Italy and I applied for US citizenship and after the test I will have the double citizenship.