Hy-Many, or Ui Maine , was one of the oldest and largest kingdoms located in Connacht, Ireland. Its territory encompassed all of what is now north, east and south Co. Galway, south and central Co. Roscommon , and at one stage apparantly subjugated land on the east bank of the Shannon. At one point in the 8th centuary its kings briefly seized land on the east shores of Galway Bay, making the kingdom stretch from central Ireland to the Atlantic.

Its ruling dyanasty were the Ui Maine , the descendants of Maine Mor , a semi-legendary figure. Its sub-kingdoms, also known as lordships, included - among others - Tir Soghain, Corco Mogha, Delbhna Nuadat, Siol Anmchada, Hy Fiachrach Fionn. These kingdoms were made up of offshoots of the Ui Maine dynasty, or subject peoples of different races.

Descendant clans of the dynasty include the O Cellaig (Kelly, O Madadhan (Maddan), O Neachtain (Naughton , O Domhnallan (Donnellan ), O Mullally (Lally) and O Fallamhain (Fallon families.

• Connachta
• Kings of Connacht
• Kings of Hy-Many
• The Kingdoms of Ireland