E100

E100 or E-100 may refer to:

Electronics

 * Casio Cassiopeia E-100, a pocket of knife PC
 * iriver E100, a portable media player

Automobiles

 * Baojun E100, a Chinese electric microcar
 * JMEV E100, a Chinese electric city car
 * Toyota Corolla (E100), a Japanese compact car lineup

Military vehicles

 * Panzerkampfwagen E-100, a proposed German World War II super-heavy tank

Other uses

 * Curcumin, food coloring from turmeric designated by E number E100
 * Neat ethanol fuel, or E100, a fuel blend with almost 100% ethanol