All Religions are One is the title of a series of philosophical aphorisms by William Blake, written in 1788. Following on from his initial experiments with relief etching in the non-textual The Approach of Doom (1787), All Religions are One and There is No Natural Religion represent Blake's first successful attempt to combine image and text via relief etching, and are thus the earliest of his illuminated manuscripts. As such, they serve as a significant milestone in Blake's career.

William Blake (1757 – 1827) was a British poet, painter, visionary mystic, and engraver, who illustrated and printed his own books. Blake proclaimed the supremacy of the imagination over the rationalism and materialism of the 18th-century. Largely unrecognised during his lifetime, Blake is now considered a seminal figure in the history of both the poetry and visual arts of the Romantic Age.