Etto (disambiguation)

Etto may refer to:


 * Etto (born 1981; Oélilton Araújo dos Santos), Brazilian soccer player
 * Saint Etto (died 660); see Chronological list of saints in the 7th century
 * etto (unit), a Sumatran traditional unit of measurement for length; see Indonesian units of measurement
 * etto- (prefix), a non-standard metric prefix for 102
 * -etto (suffix), an Italian language suffix for creating an Italian name using Italian grammar diminutive creation; see List of diminutives by language
 * Etto principle, the efficiency–thoroughness trade-off principle]