Diocesan is derived from the words Diocese and Dio.

Diocesan may also refer to:

• St. John's Diocesan Girls' Higher Secondary School, India
• Diocesan Boys' School, Hong Kong
• Diocesan Girls' School, Hong Kong
• Diocesan School for Girls (Auckland), New Zealand

• Objectivism and Libertarianism
• Objectivism, Ayn Rand, and Homosexuality
• Objectivism (disambiguation)
• Objectivism (metaphysics)
• Objectivist aesthetics
• Objectivist Forum
• Objectivist Movement
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• Objectivist philosophy
• Objectivist Philosophy
• Objectivist poetry
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• Objectivist politics
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• Objectivity/DB
• Objectivity (disambiguation)
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