Laidcenn mac Buith Bannaig or Laidcend mac Baíth Bandaig (died 661) was a monastic scholar at Cluain Ferta Mo-Lua (Clonfert-Mulloe, Co. Laois) in northern Osraige.
He is the ascribed author of the earliest surviving example of a lorica or breastplate, a term applied to a genre of charm-prayers, derived from the Pauline conception of life as an armed struggle.
In this work, protection is asked for all 70-odd body parts by invoking the heavenly powers.
Laidcend is also known for having produced the Ecloga de Moralibus, an epitome of Gregory the Great's Moralia in Job.
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