Land ingen Dúngaile (died 890 AD) (sometimes spelled Lann or Flann; her patronymic sometimes Dúnlainge) was a Dál Birn princess of Osraige who was a noteworthy figure in Irish politics during a critical time in Viking-age Ireland.
She was married three times to successive kings, and as such appears to have had a central role in cementing alliances between rival Irish kingdoms, but also in urging her husbands towards hostilities against Viking threats.
[citation needed] On Máel Sechnaill's death, the Uí Néill kingship passed back to the northern branch, represented by Áed Findliath mac Néill, son of Niall Caille, who began his reign by marrying Land, which was Áed's second marriage and Land's third.
[citation needed] Land ingen Dúngaile, princess of Osraige and queen of Tara, died in piety and penance at the monastery of Clonmacnoise in 890.
[6] The Book of Uí Maine contains the following short genealogy of Land inserted into an entry of the Ban Shenchus: "Land ingen Dungaili m. Feargaili m. Athaidha m. Con Cearca m. Faelain m. Crundmail m. Ronain Rig-flaite m. Scandlain Moir m. Cind Faelad rig Oisrige, mathair Fhlaind m. Mael tSecland."