Darmhagh Underwood is a “rough” monowidth font based on the face used on the old Underwood manual typewriter.

Darmhagh Underwood was first digitized in 1999 by Michael Everson and originally used the MacGaelic character set on the Macintosh platform, and ISO/IEC 8859-14 on the PC. In 2008 Darmhagh Underwood version 3 was released in OpenType format, completely compliant with Unicode encoding and with an extended character set.

The particular Underwood typewriter from which samples were taken to design Darmhagh Underwood is on display in the National Library of Ireland. It belonged to Conradh na Gaeilge and was used to draft armistice documentation which led to the end of the Irish War of Independence in 1921.

Darmhagh is pronounced [ˈdaɾuː].