Deepan may refer to:

• Deepan Chakravarthy, Indian singer
• Deepan Budlakoti (born 1989), Involved in citizenship dispute
• Deepan Sivaraman, Indian theatre director
• Chakkravarthy Deepan (born 1987), Chess grandmaster
• Deepan (1972–2017), film director

• Environmental law in South Africa
• Environmental law in the United Kingdom
• Environmental laws
• Environmental Literacy Plan
• Environmentally-conscious
• Environmentally Endangered Lands
• Environmentally Endangered Lands Programs
• Environmentally extended input-output analysis
• Environmentally friendlier
• Environmentally friendliest
• Environmentally Friendly Linkage System
• Environmentally least friendly
• Environmentally less friendly
• Environmentally more friendly
• Environmentally most friendly
• Environmentally Non-Disturbing Under-ice Robotic Antarctic Explorer
• Environmentally sealed
• Environmentally Sensitive Area
• Environmentally Sensitive Lands
• Environmentally Sensitive Lands Protection Program
• Environmentally Sensitive Lands Protection Program (ESLPP)
• Environmentally sustainable development
• Environmental management
• Environmental management information system
• Environmental Manager