Signia

Signia can refer to more than one notable item:
 * Signia (sportswear), an Argentine company.
 * a MasterCard product issued by Coutts and Co
 * Toyota Crown Signia, an automobile
 * a colony of ancient Rome, in Latium adiectum, today Segni
 * a Signage Software Suite, developed by Jake Bown
 * a hearing aid brand, manufactured by WS Audiology