An assessor may be:

• Assessor (fish), a genus of fishes
• Assessor (law), the assistant to a judge or magistrate
• Assessor (Oxford), a senior officer of the University of Oxford
• Assessor (property), an expert who calculates the value of property
• Collegiate Assessor, a civil rank in Imperial Russia
• Assessor (Italy), a member of the executive board in Italian local government
• Scabinus (disambiguation) or its various derived offices, in English translation
• Assessor (horse)

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