A court of equity, also known as an equity court or chancery court, is a court authorized to apply principles of equity rather than principles of law to cases brought before it. These courts originated from petitions to the Lord Chancellor of England and primarily heard claims for relief other than damages, such as specific performance and extraordinary writs. Over time, most equity courts merged with courts of law, and the adoption of various Acts granted courts combined jurisdiction to administer common law and equity concurrently. Courts of equity are now recognized for complementing the common law by addressing its shortcomings and promoting justice.

In the field of jurisprudence, equity is the particular body of law, developed in the English Court of Chancery, with the general purpose of providing legal remedies for cases wherein the common law is inflexible and cannot fairly resolve the disputed legal matter. Conceptually, equity was part of the historical origins of the system of common law of England, yet is a field of law separate from common law, because equity has its own unique rules and principles, and was administered by courts of equity.