Artrí mac Cathail (died 821) was a King of Munster from the Glendamnach branch of the Eóganachta.
In 794, an expedition by the high king Donnchad Midi (died 797) is recorded to aid the Laigin against a Munster incursion, but Artrí is not directly connected with this.
[5] Artrí may have had his son Tnúthgal mac Artrach ordained as King as well who died circa 807.
[6] The accession of Feidlimid mac Cremthanin (died 847) of the Cashel branch is recorded in 820 with the death of Artrí the next year in 821.
His great grandson Art Caemh was ancestor of the Ó Caiomh (O'Keeffes) of County Cork.