| AmeriFlux | North, Central and South America Network. https://ameriflux.lbl.gov |
| ANAEE | Analysis and Experimentation on Ecosystems European Research Infrastrucutre. https://www.anaee.eu/ |
| AsiaFlux | Asian Regional Research Network. http://www.asiaflux.net/ |
| CarboAfrica | European project with a network of sites in Africa, ended in 2009. https://cordis.europa.eu/project/id/37132 |
| CarboEuroFlux | European project with a network of sites in Europe, ended in 2003. |
| CarboEuropeIP | European project with a network of sites in Europe, ended in 2008. |
| CarboExtreme | European project with a network of sites in Europe, ended in 2013. https://cordis.europa.eu/project/id/226701/results |
| CarboItaly | Italian project with a network of sites in Italy, ended in 2010. |
| Carbomont | European project with a network of sites in Europe, ended in 2003. |
| ChinaFLUX | Chinese Network of sites. https://www.chinaflux.org/index.aspx |
| CZNet | Critical Zone Network in US. https://criticalzone.org |
| DANUBIUS-RI | River-Sea Systems European Research Infrastructure. https://www.danubius-ri.eu/ |
| EFTEON SAEON | South African Freshwater and Terrestrial Observation Network. https://efteon.saeon.ac.za/ |
| eLTER | Integrated European Long-Term Ecosystem, Critical zone and socio-ecological Research Infrastructure. https://elter-ri.eu/ |
| EuroFlux | European project with a network of sites in Europe, ended in 2000. |
| European Fluxes Database | European and Unaffiliated sites reference network. https://www.europe-fluxdata.eu. |
| Fluxnet-Canada | Canadian reference network, ended in 2015. |
| GHG-Europe | European project with a network of sites in Europe, ended in 2013. https://cordis.europa.eu/project/id/244122/reporting |
| GreenGrass | European project with a network of sites in Europe, ended in 2003. |
| ICOS | Integrated Carbon Observation System European Research Infrastructure. https://www.icos-ri.eu/ |
| IMECC | European project with a network of sites in Europe, ended in 2013. |
| INFLUX | Indianapolis (US) Flux Experiment. https://sites.psu.edu/influx/. |
| InGOS | European project with a network of sites in Europe, ended in 2015. https://cordis.europa.eu/project/id/284274/reporting |
| JapanFlux | Japanese Network of sites. https://japanflux.org/?lang=english |
| KoFlux | South Korean Network of sites. |
| LBA | Large-Scale Biosphere-Atmosphere Experiment in Amazonia. https://www.earthdata.nasa.gov/data/projects/lba-eco |
| LTAR | Long Term Agroecosystem Research Network in US. https://ltar.ars.usda.gov/ |
| LTER | Long Term Ecological Research Network in US. https://www.lternet.edu/ |
| Medeflu | European project with a network of sites in Europe, ended in 2003. |
| MexFlux | Mexican Network of sites. https://mexflux.gitlab.io/ |
| NEON | National Ecological Observatory Network in US. https://www.neonscience.org/ |
| New York State Mesonet | New York State Mesonet Flux Network. https://www.nysmesonet.org/networks/flux |
| OzFlux | Australian and New Zealand flux research network. https://www.ozflux.org.au/ |
| PAGE21 | European project with a network of sites in the Arctic, ended in 2015. https://cordis.europa.eu/article/id/92801-a-better-understanding-of-permafrost |
| Phenocam | Phenological Camera Network. https://phenocam.nau.edu/webcam/ |
| Swiss FluxNet | Swiss Network of sites. https://www.gl.ethz.ch/research/bage/fluxnet-ch.html |
| TaiwanFlux | Taiwan Network of sites. |
| TCOS-Siberia | European project with a network of sites in Siberia, ended in 2004. |
| TERENO | Terrestrial Environmental Observatories in Germany. https://www.tereno.net/ |
| TERN | Australia’s ecosystem monitoring network. https://www.tern.org.au/ |
| UFLUX | Utah Flux Network. https://ugs.easyfluxweb.com/ |
| ThaiFlux | Thailand Network of sites. https://sites.google.com/view/thaiflux/ |
| TROPI-DRY | Network of dry forests in Latin America. https://www.tropi-dry.org/ |
| Unaffiliated | Single site not affiliated with any other network. |
| Urban Flux Network | Network of urban eddy covariance sites. |
| USCCC | Chinese Network of sites under US-China collaboration. |