Italy has given the world some of the best-known physicists – their revolutionary work greatly contributing to the physical phenomenon or natural science involving the study of matter and related concepts. Galileo Galilee was a famous Italian physicist whose achievements include improvising the telescope. He was also responsible for some radical astronomical observation which is why he is often referred to as the ‘Father of Modern Physics’. The Avogadro number or Avogadro law or Avogadro principle that we study today is the result of the study and research of Amedeo Avogadro and his contribution to molecular theory. He was also an Italian by origin. Forty-three years prior to being granted an American citizenship, Enrico Fermi had his roots well laid in the Italian soil. The famous physicists started his journey for the love of physics in Italy. He is considered one of the greatest 20th century Italian physicists. He is responsible for developing the first nuclear reactor. Also, his contribution to the development of quantum theory, nuclear and particle physics and statistical mechanics is magnanimous. These are just a handful of the bucket-load of supremely talented Italian physicists that the world takes pride in. Check this section to get an overview of the life, works and contributions made by some of the greatest Italian physicists.