Folio is a sans-serif typeface in the neo-grotesque style designed by Konrad Friedrich Bauer and Walter Baum in 1957 for the Bauer Type Foundry (German: Bauersche Gießerei).

[1] Bauer licensed the design to Fonderie Typographique Française for sale in France under the name Caravelle.

[2] Folio is considered part of the International Typographic Style, with Helvetica and Univers also released at the same time.

[1] The typeface experienced moderate success in the United States.

[2] Folio Extended (Folio Halbfett) included alternate versions of upper case A, E, M, N, and R. The cold type version was issued by Hell AG.