The name reached its all-time peak in 2012 with 4 births ranking #4838. STABLE Recent data shows the name is currently stable.
Harri is a short form used in more than one tradition, most often connected with the Henry and Harry family. In modern English-speaking use it is often chosen as a variant spelling with a neat, contemporary feel.
The name appears in Welsh and Finnish naming, among other settings, which gives it a broader background than it first suggests. Its modern appeal comes from being compact, familiar, and slightly different.