The Edinburgh Encyclopædia is an encyclopaedia in 18 volumes, printed and published by William Blackwood and edited by David Brewster between 1808 and 1830. In competition with the Edinburgh-published Encyclopædia Britannica, the Edinburgh Encyclopædia is generally considered to be strongest on scientific topics, where many of the articles were written by the editor.

Sir David Brewster KH PRSE FRS FSA Scot FSSA MICE was a British scientist, inventor, author, and academic administrator. In science he is principally remembered for his experimental work in physical optics, mostly concerned with the study of the polarization of light and including the discovery of Brewster's angle. He studied the birefringence of crystals under compression and discovered photoelasticity, thereby creating the field of optical mineralogy. For this work, William Whewell dubbed him the "father of modern experimental optics" and "the Johannes Kepler of optics."