What is Leo short for?
Leo is short for Leonardo, Leonard, Leopold and Leonid. In 2025, 8,173 boys and 23 girls in the United States were given Leo as their full name, with nothing longer behind it, according to Social Security records.
The names behind Leo
Each count is the number of children given that name in the United States in 2025, from US Social Security records. A name given to fewer than five children in a year is left out of the published file.
Leonardo Italian origin
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Leo from Leonardo: the classic short form, radiant on its own.
3,789 boys named Leonardo in 2025