List of citizen science projects
Citizen science projects are activities sponsored by a wide variety of organizations so non-scientists can meaningfully contribute to scientific research.
Precis
Activities vary widely from transcribing old ship logbooks to digitize the data as part of the Old Weather project to observing and counting birds at home or in the field for eBird. Participation can be as simple as playing a computer game for a project called Eyewire that may help scientists learn more about retinal neurons. It can also be more in depth, such as when citizens collect water quality data over time to assess the health of local waters, or help discover and name new species of insects. An emerging branch of Citizen Science are Community Mapping projects that utilize smartphone and tablet technology. For example, TurtleSAT is a community mapping project that is mapping freshwater turtle deaths throughout Australia.This list of citizen science projects involves projects that engage all age groups. There are projects specifically aimed at the younger age demographic like iTechExplorers which was created by a 14 year old in the UK to assess the effects of bedtime technology on the body's circadian rhythm and can be completed in a classroom setting. Other projects like AgeGuess focus on the senior demographics and enable the elderly to upload photos of themselves so the public can guess different ages.
Lists of citizen science projects may change. For example, the Old Weather project website indicates that January 10, 2015, 51% of the logs were completed. When that project reaches 100 percent, it will move to the completed list.
Worldwide
Citizen scientists anywhere in the world can participate in these projects.| Start | End | Project name | Discipline | Sponsoring organization | Notes |
| 2019 | 2020 | Hubble Asteroid Hunters | Astronomy | Zooniverse, ESA ESDC | , |
| 2011 | 2012 | Ice Investigators | Astronomy | CosmoQuest.org | |
| 2011 | 2012 | Moon Mappers: Million crater challenge | Planetary Astronomy | CosmoQuest.org | |
| 2018 | Ongoing | Mosquito Alert | Public Health | Unknown | |
| 2022 | ongoing | Spritacular | Meteorology | NASA, Catholic University of America | |
| 2022 | ongoing | Jovian Vortex Hunter | Astronomy | NASA, Southwest Research Institute, Zooniverse | |
| 2023 | ongoing | Deciphering Secrets: Unlocking the Manuscripts of Medieval Spain | History | University of Colorado, Zooniverse, University of Madrid, European Union's Seventh FPRTD | |
| 2022 | ongoing | Cloudspotting On Mars | Astronomy, Planetary Research, Weather | NASA, Zooniverse | |
| 2023 | ongoing | The Daily Minor Planet | Astronomy, Minor Planet Research, Asteroids | NASA, Zooniverse | - |
Regional
These projects require that citizen scientists be local to a region of study.Asia
| Start | End | Project name | Discipline | Sponsoring organization | Country | Notes |
| 1957 | ongoing | Hong Kong Birdwatching Society | Biodiversity | Unknown | Hong Kong | |
| 1993 | ongoing | Bird Conservation Society of Thailand | Biodiversity | IUCN, Toyota | Thailand | |
| 2012 | 2012 | Citizen Sparrow | Ornithology | Bombay Natural History Society | India | |
| 2012 | Unknown | FLOAT Beijing | Air Quality, Environmental science | Black Rock Arts Foundation, AWESOME Foundation | China | |
| 2012 | ongoing | WildMentor | Biodiversity | Unknown | Bangladesh | |
| 2013 | ongoing | RAD@home | Astronomy | RAD@home Astronomy Collaboratory and many Indian research institutes | India | focus on extragalactic radio astronomy |
| 2015 | ongoing | Bauhinia Genome | Biodiversity | Unknown | Hong Kong | |
| 2017 | 2020 | Respirer Living Sciences | Air Quality, Environmental science | IIT Kanpur, Shaki Sustainable Energy Foundation | India | |
| 2017 | Unknown | AirBox | Air Quality, Environmental science | Unknown | Taiwan and South | |
| 2018 | 2021 | CleanAir | Air Quality, Environmental science | American University of Yangon, Phandeeyar | Myammar | |
| 2019 | DustBoy | Air Quality, Environmental science | Thailand | |||
| 2020 | Unknown | PakAirQuality | Air Quality, Environmental science, Public Health, Urban Planning | Research Grants Council (RGC) of Hong Kong and Jiangsu Provincial Department of Education, China. | Pakistan | |
| 2021 | ongoing | Hong Kong Jellyfish Project | Biodiversity | Unknown | Hong Kong | |
| 2021 | ongoing | Herptile Roadkill Study | Herpetology, Roadkill, Habitat fragmentation Environmental science | Herpetological Society of Singapore | Singapore |
Europe
| Start | End | Project name | Discipline | Sponsoring organization | Country | Notes |
| 2009 | 2013 | BBC Lab UK | Psychology | BBC, BBC | UK | Discontinued in 2018, see BBC Lab UK |
| 1979 | ongoing | Big Garden Birdwatch | Ornithology | Royal Society for the Protection of Birds | UK | Cited to be the world's largest citizen science project |
North America
| Start | End | Project name | Discipline | Sponsoring organization | Country | Notes |
| 1997 | 2007 | Birdhouse Network | Ornithology | Cornell Lab of Ornithology | US | |
| 1994 | 2011 | House Finch Disease Survey | Ornithology | Cornell Lab of Ornithology | North America | |
| 2010 | 2014 | Maryland Amphibian and Reptile Atlas | Herpetology | Natural History Society of Maryland, Inc., Maryland Department of Natural Resources | US | |
| 2015 | 2015 | McMaster Postcard Project | Archives, Social Science, History | William Ready Division of Archives and Research Collections at McMaster University Library | Canada | McMaster Postcard Project |
| 2023 | ongoing | Volunteer Water Quality Monitoring at Elkhorn Slough | Water Quality, Environment | NOAA, California Fish and Wildlife, Central Coast Regional Water Quality Control Board, Monterey County Consolidated Chemistry Lab, Zooniverse | California |