Islamnagar ({{lang-ur| اسلام نگر }}) can refer to:

• Islamnagar, Badaun, nagar panchayat in Badaun district in the Indian state of Uttar Pradesh.
• Islamnagar, Karachi, neighbourhood in Baldia Town in Karachi, Sindh, Pakistan.
• Islamnagar, Lahore, neighbourhood in Gulberg Town in Lahore, Punjab, Pakistan.
• Islamnagar, Bhopal, village and former fortified city near Bhopal, India

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