In Early Irish literature a Bríatharogam ("word ogham", plural Bríatharogaim) is a two word kenning which explains the meanings of the names of the letters of the Ogham alphabet. Three variant lists of bríatharogaim or 'word-oghams' have been preserved, dating to the Old Irish period. They are as follows:

• Bríatharogam Morainn mac Moín
• Bríatharogam Maic ind Óc
• Bríatharogam Con Culainn