Luigi Palmieri (22 April 1807 – 9 September 1896) was an Italian physicist and meteorologist.

He was famous for his scientific studies of the eruptions of Mount Vesuvius, for his researches on earthquakes and meteorological phenomena and for improving the seismograph of the time.

Furthermore, he was the first to detect the presence of Helium on Earth on the lava of Mount Vesuvius.

[2][3] Using a modified Peltier electrometer, he also carried out research in the field of atmospheric electricity.

Other scientific contributions included the development of a modified Morse telegraph, and improvements to the anemometer and pluviometer.