Jacula is an Italian progressive rock band from the early 1970's, born mainly from as an experiment of the occultist Antonio Bartoccetti (Antonius Rex), Doris Norton, organist Charles Tiring and medium Franz Porthenzy.

Their music was quite innovative in the progressive circles of those years, and is considered very rare by most fans and analysts of this kind of music, especially in an era which saw the development of groups such as Pink Floyd, Genesis or Gentle Giant, which were the basis of the new progressive rock scene.

The band was experimental in its nature, and had been labeled by founder Antonio Bartoccetti as "a youth mistake". Antonio Bartoccetti involvement with other groups during the 70's ensured Jacula's relatively small discography.

Nevertheless, the two albums the group conceived are albeit complete: In Cauda Semper Stat Venenum (1969) which has a superposition of organ, piano and other dark sound effects, and Tardo Pede In Magiam Versus (1973) which features Doris Norton's vocals.

After nearly four decades, Jacula released their third studio album Pre Viam in May, 2011.