Eerste van een serie van 5 Oecumenische Concilies gehouden in het Lateranen [d:290] van 18 maart tot en met 6 april 1123. Hierbij een samenvatting van de belangrijkste Canons, door dit Concilie afgekondigd. (Aan een vertaling wordt gewerkt)

Canons van het Eerste Lateraans Concilie (18 mrt - 6 apr 1123):

• Over simonie, celibaat en investituur
  • Canon 1 [5914|1], over simonie, celibaat en investituur
  • Canon 3 [5914|3] and canon 11 [5914|11] forbid priests, deacons, subdeacons, and monks to marry or to have concubines; it is also forbidden them to keep in their houses any women other than those sanctioned by the ancient canons. Marriages of clerics are null pleno jure, and those who have contracted them are subject to penance.
  • Canon 4 [5914|4]
• Canon 6 [5914|6]: Nullity of the ordinations performed by the heresiarch Burdinus (Antipope Gregory VIII) after his condemnation.
• Canon 11 [5914|11]: Safeguard for the families and possessions of crusaders.
• Canon 14 [5914|14]: Excommunication of laymen appropriating offerings made to the Church, and those who fortify churches as strongholds.
• Canon 16 [5914|16]: Against those who molest pilgrims on their way to Rome.
• Canon 17 [5914|17]: Abbots and religious are prohibited from admitting sinners to penance, visiting the sick, administering extreme unction, singing solemn and public Masses; they are obliged to obtain the holy chrism and holy oils from their respective bishops.