National Geoscience Database of Iran
- Part of a national system for collection, systematization and presentation of geoscientific data for the needs of diverse users. Includes maps and data on topics including geology, mineral resources, natural hazards, and abandoned mines.
- http://www.ngdir.ir

Geological Survey of Iran (GSI)
- Organization responsible for the geological study and the exploration of the mineral resources (except hydrocarbons) of Iran. Features photos of Iran, latest news, organization chart and descriptions of projects and activities.
- http://gsi.ir

Air Quality Control Company of Tehran
- Tehran air quality report updated daily. Organized by district.
- http://www.aqcc.org

Vulnerable Marine Zones of Iran
- Article by Afshin Daanehkaar from the quarterly Moheet-e Zeest (The Environment).
- http://www.netiran.com/?fn=artd(2213)

Water Pollution in the Persian Gulf and the Caspian Sea
- Article from Payam-e Darya, a publication of the Shipping Organization of the Islamic Republic of Iran.
- http://www.netiran.com/?fn=artd(2369)

Secret in the Heart of Kish
- History and design of the 1000 year old qanat on Kish Island. From Mantaqe Azad magazine.
- http://www.netiran.com/?fn=artd(2490)

Fishes of the Southern Caspian Sea Basin
- Fish list and photo gallery of fishes of northern Iran.
- http://medlem.spray.se/davidgorgan/fishes.html

CENESTA - Centre for Sustainable Development
- Non-governmental, non-profit organisation dedicated to promoting sustainable community- and culture-based development. Its main area of work is Iran and Southwest Asia.
- http://www.cenesta.org/

Nature of Iran
- Photo albums about nature of Iran
- http://irsen.org/nature.html

Showcaves.com: Caves of Iran
- General information, history and description of some caves in Iran.
- http://www.showcaves.com/english/misc/region/ir.html

Green Party of Iran Environment News Archive
- Includes news articles about Iran's drought, air and water pollution, agriculture, flora and fauna.
- http://www.iran-e-sabz.org/news/news.html

Iranian Green Wave Front
- Environmental non government organization based in Iran.
- http://irgwf.itgo.com/

Biochemical Society of the Islamic Republic of Iran
- Organizes biennial national conferences of biochemistry and laboratory medicine.
- http://www.biochemiran.com

Iranbiotech.com
- Center for biotechnology development in Iran.
- http://www.iranbiotech.com

Asiatic Cheetah
- Information and photos about the last captive Asiatic Cheetah named Marita. There are currently less than 50 asiatic cheetahs in Iran and less than a few hundred worldwide.
- http://www.wildaboutcats.org/asiatic.htm

Animal Info
- Compilation of information about threatened species, population, land use, protected lands, economy and education in Iran.
- http://www.animalinfo.org/country/iran.htm

Recent Bird Sightings in Iran
- List of recent interesting bird sightings in Iran collected by the Ornithological Society of the Middle East.
- http://www.osme.org/osmerec/iranrec.html

Arian Zamin Research Group
- Iranian research team in geological sciences, ecosystems and natural resources.
- http://www.arianzamin.com

IRSEN
- Iranian Society of Environmentalists, An Environmental non government organization in Iran. history, publications and photo albums available.
- http://www.irsen.org

EIA in IRAN
- EIA (Environmental Impact Assessment) , Capacity building and institutional strengthening in Iran. project by UNDP (United Nations Development Program) and the department of the environment.
- http://www.eiairan.org

Central Eurasian Water Crisis: Caspian, Aral, and Dead Seas
- Full text of book edited by Iwao Kobori and Michael H. Glantz and published by the United Nations University Press. Includes chapter on Iranian perspectives on the Caspian Sea.
- http://www.unu.edu/unupress/unupbooks/uu18ce/uu18ce00.htm

International Institute for Caspian Studies
- Non governmental research and consultancy institute in Iran, studying political, economical, social, cultural, environmental issues of Caspian sea. Online newsletter.
- http://www.caspianstudies.com/

Birds of Golestán Province
- Bird list and photo gallery of birds of northern Iran.
- http://medlem.spray.se/davidgorgan/Birds.html

Green Front of Iran
- Non-government environmental organization. Contacts and description of activities.
- http://www.greenfront.org/

Zirakzadeh Science Foundation
- Sets up science centers and museums throughout Iran. Site describes their history, goals and achievements. Photos and science quiz.
- http://www.iranonline.com/zsf/

Aquastat
- Information about Iranian water resources for agriculture and rural development.
- http://www.fao.org/ag/agl/aglw/aquastat/countries/iran/index.htm

Conservation in The Islamic Republic of Iran
- Compilation of information about endangered species, natural resources and environmental legislation.
- http://darwin.bio.uci.edu/~sustain/h90/Iran.htm