Amedeo, of Italian origin, is derived from the Germanic name Amadeus, which means 'love of God'. It was initially popularized by Saint Amadeus of Lausanne, a 12th-century monk and reformer of the Cistercian order. The name Amedeo gained prominence in Italy during the Renaissance period, with notable bearers including Amedeo Modigliani, the renowned Italian painter and sculptor.
The name Amedeo experienced periods of popularity with a peak in the early 1910s, reaching as high as 24 births in 1917. However, it declined steadily thereafter, dropping to a low of 5 births per year from the late 1930s until the mid-1960s. Since then, its popularity has fluctuated, with recent years seeing between 5 and 9 births annually, totaling 661 births over the recorded period.