Nocturnus was an American progressive death metal band formed in Tampa, Florida in 1987 by drummer/vocalist Mike Browning (formerly of Morbid Angel). They were known for their science-fiction themed lyrics and use of keyboards, both of which were virtually unknown in extreme metal. Although they were relativly obscure during their time and even now, important bands such as Necrophagist, Theory in Practice and even Children of Bodom have cited Nocturnus as an influence.

Nocturnus was among the most technical and atmospheric outfit to rise from the legendary Tampa, Florida death metal scene. By adding synths to their music, they found an essential element to bring a new sound to the young death metal scene and were an huge impact upon the entire genre from this moment on. The band formed in the late 1980s by singer/drummer Mike Browning, guitarists Mike Davis and Gino Marino, bassist Jeff Estes and keyboardist Louis Panzer. Following the demo Science of Horror,