* State Bar Associations (or equivalent): These are usually the primary regulatory bodies for lawyers within a state or province. They handle licensing, discipline (investigating complaints of misconduct), and continuing legal education requirements.
* State Supreme Courts (or equivalent): In many jurisdictions, the highest court has ultimate authority over the legal profession, often setting rules of professional conduct and overseeing the bar association.
* Professional Responsibility Committees: These committees within bar associations often handle complaints against lawyers, conduct investigations, and recommend disciplinary actions.
* Clients: Clients, in a sense, supervise lawyers through their ability to hire and fire them, and through their reporting of misconduct.
* Judges: Judges observe lawyers' conduct in court and can issue sanctions for unprofessional behavior.
* Ethics Committees: These committees, often associated with bar associations or courts, provide guidance on ethical issues and offer opinions on potential conflicts of interest.
It's important to remember that the specifics vary significantly by location. There isn't a single, centralized entity that supervises all lawyers globally or even nationally in most countries.