Pirani may refer to:
People Amina Pirani Maggi (1892–1979), Italian stage and film actress Arlind Pirani (born 1990), Albanian footballer Felix Pirani (1928-2015), British theoretical physicist and political activist Frederick Pirani (1859-1926), New Zealand politician Marcello Pirani (1880–1968), German physicist, inventor of the Pirani gauge Mario Pirani (1952-2015), Italian journalist
Other uses Pirani (Sufism) Pirani gauge, a thermal conductivity gauge used for measuring pressure in vacuum systems