Collectio Canonum Hibernensis (English: Irish Collection of Canon law) (or CCH) is an Irish ecclesiastical work written in Latin before 725. It is the work of two Irish scholars working in 8th century Europe, Cú Chuimne of Iona (d. 747) and Ruben of Dairinis (d.725). Its title reflects its origin as a compilation of over two hundred years worth of canon law and synodal decrees.
The CCH includes not only Canon Law regarding the church, but there are also a number of provision about secular legal matters such as contracts, oaths, and sureties, as well as general information about the shape of the law.
The CCH was not the only form of law available in medieval Ireland. A secular law, more commonly known as the Brehon Laws, existed and is often at variance with the CCH, although perhaps more surprising is their tendency to overlap.