A green party is a political party based on the principles of green politics.
Green Party or Greens Party may also refer to:
- Albania: Green Party of Albania
- Australia: Australian Greens
- Austria: The Greens – The Green Alternative
- Belarus: Belarusian Green Party
- Belize: Belize Green Independent Party
- Bolivia: Green Party of Bolivia
- Brazil: Green Party (Brazil)
- Bulgaria: Green Party of Bulgaria
- Burundi: Green Party-Intwari
- Canada: Green Party of Canada
- Alberta: Alberta Greens, 1986–2009
- Alberta: Green Party of Alberta, 2011–present
- British Columbia: Green Party of British Columbia
- Vancouver: Green Party of Vancouver
- Manitoba: Green Party of Manitoba
- New Brunswick: Green Party of New Brunswick
- Nova Scotia: Green Party of Nova Scotia
- Ontario: Green Party of Ontario
- Prince Edward Island: Green Party of Prince Edward Island
- Quebec: Green Party of Quebec
- Saskatchewan: Green Party of Saskatchewan
- Yukon: Yukon Green Party
- Chile: Green Ecologist Party (Chile)
- Colombia: Oxygen Green Party, 1998–2005
- Colombia: Green Party (Colombia)
- Costa Rica:
- Cartago: Cartago Green Party
- Croatia: Green Party – Green Alternative
- Czech Republic: Green Party
- Dominican Republic: Green Socialist Party
- Egypt: Egyptian Green Party
- Europe: European Green Party
- Fiji: Green Party of Fiji, 2008–13
- Finland: Green Party (Finland)
- France: Green Party (France)
- Georgia: Green Party of Georgia
- Germany: Green Party (Germany)
- East Germany: East German Green Party, 1990 only
- Hungary: Green Party of Hungary, 1989–2011
- Hungary: Hungarian Social Green Party
- Hungary: Party of Greens (Hungary)
- Iceland: Right-Green People's Party, 2010–16
- India: India Greens Party
- Iran: Green Party of Iran
- Iraq: Green Party of Iraq
- Ireland: Green Party - An Comhaontas Glas
- Israel: The Greens (Israel) and Green Party (Israel)
- Japan: Green Party of Japan
- Kenya: Mazingira Green Party of Kenya
- Kosovo: Green Party of Kosovo
- Latvia: Latvian Green Party
- Lebanon: Green Party of Lebanon
- Lithuania: Lithuanian Green Party
- Luxembourg: Green Party
- Madagascar: Madagascar Green Party
- Malaysia: Green Party of Malaysia
- Mexico: Ecologist Green Party of Mexico
- Moldova: Ecologist Green Party (Moldova)
- Mongolia: Civil Will–Green Party
- Mongolia: Mongolian Green Partyx
- Mozambique: Greens Party of Mozambique
- Netherlands: Green Party of the Netherlands
- Netherlands: The Greens
- New Zealand: Green Party of Aotearoa New Zealand
- New Zealand: Progressive Green Party, 1995–96
- Nicaragua: Ecologist Green Party of Nicaragua
- Norway: Green Party (Norway)
- Pakistan: Green Party of Pakistan
- Peru: Green Alternative Ecologist Party of Peru
- Philippines: Philippine Green Republican Party
- Poland: Green Party of Poland
- Portugal: Ecologist Party "The Greens"
- Romania: Green Party (Romania)
- Russia: Russian Ecological Party "The Greens"
- Rwanda: Democratic Green Party of Rwanda
- Saint Vincent and the Grenadines: Saint Vincent and the Grenadines Green Party
- Serbia: Green Party (Serbia)
- Slovakia: Green Party (Slovakia)
- Slovakia: Slovak Green Party
- Slovenia: Youth Party – European Greens
- Somalia: Somalia Green Party
- South Africa: Green Party of South Africa
- South Korea: Green Party Korea
- Spain: Green Party (Spain)
- Sweden: Green Party (Sweden)
- Switzerland: Green Liberal Party of Switzerland
- Switzerland: Green Party of Switzerland
- Taiwan: Green Party Taiwan
- Tunisia: Green Tunisia Party
- Turkey: Greens Party (Turkey), 2008–12
- Turkey: Green Left Party
- Uganda: Uganda Green Party
- Ukraine: Party of Greens of Ukraine
- United Kingdom: Raving Loony Green Giant Party, 1989–93
- United Kingdom: Green Party (UK), 1973–90
- England and Wales: Green Party of England and Wales
- London: London Green Party
- Wales: Wales Green Party
- Northern Ireland: Green Party Northern Ireland
- Scotland: Scottish Greens
- England and Wales: Green Party of England and Wales
- United States: Greens/Green Party USA
- United States: Green Party of the United States
- Alaska: Green Party of Alaska
- Arizona: Arizona Green Party
- Arkansas: Green Party of Arkansas
- California: Green Party of California
- Colorado: Green Party of Colorado
- Connecticut: Connecticut Green Party
- Delaware: Green Party of Delaware
- District of Columbia: D.C. Statehood Green Party
- Florida: Green Party of Florida
- Hawaii: Green Party of Hawaii
- Idaho: Idaho Green Party
- Illinois: Illinois Green Party
- Iowa: Iowa Green Party
- Kansas: Kansas Green Party
- Kentucky: Kentucky Green Party
- Louisiana: Green Party of Louisiana
- Maine: Maine Green Independent Party
- Maryland: Maryland Green Party
- Massachusetts: Green-Rainbow Party
- Michigan: Green Party of Michigan
- Minnesota: Green Party of Minnesota
- Mississippi: Green Party of Mississippi
- Montana: Montana Green Party
- Nebraska: Nebraska Green Party
- New Jersey: Green Party of New Jersey
- New Mexico: Green Party of New Mexico
- New York: Green Party of New York
- Ohio: Green Party of Ohio
- Oklahoma: Green Party of Oklahoma
- Oregon: Pacific Green Party
- Pennsylvania: Green Party of Pennsylvania
- Rhode Island: Green Party of Rhode Island
- South Carolina: South Carolina Green Party
- Texas: Green Party of Texas
- Vermont: Vermont Green Party
- Virginia: Green Party of Virginia
- Washington: Green Party of Washington State
- West Virginia: West Virginia Green Party
- Wisconsin: Wisconsin Green Party