Heavy Soul is a licensed compilation album by Atomic Rooster, a British rock band.

It is the first in Castle Communications' definitive series of seven remastered Atomic Rooster CDs, the other five consisting of their studio albums from 1970 to 1973 and a Vincent Crane career overview.

However, these two tracks, originally released on Decca, were subject to a short-term licensing deal between Castle and Universal.

In 2005, Heavy Soul was also released as a DVD-Audio DualDisc on Silverline Records, Atomic Rooster's only such disc to date.

This version was retitled The Best of and though retaining the same packaging and boasting remixed 5.1 surround sound, it omitted many of the tracks in order to facilitate issue as a single disc.