This document summarizes Irish competition law relating to the abuse of a dominant position. It outlines that abuse of a dominant position is prohibited by section 5 of Ireland's Competition Acts, which mirrors article 102 of the EU Treaty. The Competition and Consumer Protection Commission and Communications Regulation Commission can investigate potential abuses. To date there have been few court cases, but the CCPC frequently concludes investigations through negotiated settlements requiring companies to amend potentially anti-competitive practices.