Leone Wollemborg (4 March 1859 – 19 August 1932) was an Italian economist and politician.

At fifteen, he enrolled in the University of Padua and graduated in law 4 years later with a thesis on autonomous tax municipalities.

He had memorized all of the poems of Heinrich Heine and was studying the works of Friedrich Wilhelm Raiffeisen.

Wollemborg and a group of about 30 farm workers and small landowners founded Italy's first rural credit union in Loreggia in 1883 (several Banca Popolare found before 1883).

The intent of the bank was to help tenants, small landowners and agricultural workers to rise from poverty by granting loans at low interest and with long deadlines.