Definition
A cadi (also spelled qadi or kadi) is a judge or civil magistrate in Islamic legal systems, historically associated with the Ottoman Empire and other Muslim-governed territories. The cadi exercised judicial authority under Islamic law (sharia), typically at the local or municipal level, adjudicating disputes in civil, criminal, and religious matters within a defined jurisdiction. The office combined functions that Western legal systems separate: the cadi served simultaneously as judge, notary, and administrator of personal status law.
Common Language
Modern common usage (Wiktionary): Alternative form of qadi.
Historical common usage (Webster's 1913): An inferior magistrate or judge among the Mohammedans, usually the judge of a town or village.
Editorial note: The common definition is not inaccurate, but it understates the cadi's legal significance. Characterizing the office as merely "inferior" reflects a Western hierarchical lens. Within Ottoman and other Islamic legal structures, the cadi held substantial and formalized authority, including jurisdiction over matters that would today involve separate courts for family law, contract, property, and criminal procedure.
Why It Matters in Research
CADI appears in Anglo-American legal dictionaries primarily as a reference term rather than an operative legal concept. Its presence in Black's and Bouvier's reflects the 19th-century need to equip common law practitioners with working vocabulary for encounters with Ottoman law — particularly relevant in the context of commercial disputes, treaty interpretation, extraterritorial jurisdiction, and consular courts operating in Ottoman territories.
Researchers working in the following areas should pay attention to this term:
Capitulation treaties: 19th-century treaties between Western powers and the Ottoman Empire granted extraterritorial jurisdiction to foreign consuls over their nationals, often explicitly excluding cadi jurisdiction. Understanding what authority was being carved out requires knowing what a cadi did.
Colonial and post-colonial legal history: British and French colonial administration in North Africa, the Middle East, and South Asia had to account for existing cadi courts. Legal records from these jurisdictions may treat cadi decisions as a distinct category of prior adjudication.
Comparative law sources: 19th-century treatises on international law and comparative legal systems regularly discuss the cadi's role. Researchers using those sources should note that the term encompasses significant variation across jurisdictions and periods — Ottoman cadis operated within a bureaucratic hierarchy, while cadis in other regions exercised more autonomous authority.
Spelling variation is a practical research hazard. The term appears as cadi, qadi, kadi, and cadhi across historical sources. Index and full-text searches should account for all variants.
Historical Dictionary Support
All three source dictionaries — Black's (1st ed.), Black's (2nd ed.), and Bouvier's — define cadi identically or near-identically as "a Turkish civil magistrate." The definitions are in complete agreement and are equally minimal. None of the three dictionaries elaborates on the cadi's jurisdiction, the legal system in which the office operated, the distinction between cadi courts and other Ottoman judicial bodies, or the office's relevance to common law practice.
The Webster's 1913 definition is marginally more informative in specifying the local-level character of the office, but it too stops short of legal analysis.
What the historical dictionaries miss entirely: the cadi's role as a notary and record-keeper, the appellate structure above the cadi (the kazasker and later the nizamiye court system), the cadi's involvement in waqf (charitable endowment) administration, and the significance of cadi court records as historical legal documents now held in Ottoman archives. Researchers relying solely on these dictionary definitions will have a thin and somewhat misleading picture of the office.
Jurisdictional Note
The cadi as an operative legal office existed across the Ottoman Empire, the Mughal Empire, and various North African and sub-Saharan African polities. Its authority and procedural form varied substantially by region and period. In territories under British or French colonial administration, cadi courts were sometimes formally preserved for personal status matters (marriage, divorce, inheritance) while civil and criminal jurisdiction was transferred to colonial courts — a distinction that persists in modified form in several contemporary legal systems.