E number (disambiguation)

An E number is a food additive code.

E number or E code may also refer to:


 * $e$ (mathematical constant), the base of the natural logarithm
 * 14 (number), the number represented by hexadecimal "E"
 * International E-road network, a numbering system for roads in Europe
 * External Cause of Injury Codes, codes used to define the mechanism of death or injury; see List of ICD-9 codes E
 * E-numbers in physics, the elements of a Clifford algebra in Arthur S. Eddington's "fundamental theory"