This article lists political parties in Paraguay. Paraguay was a one-party dominant state with the Colorado Party until the 2008 Paraguayan general election when the opposition, Patriotic Alliance for Change, won the presidency.

The Paraguayan Liberal Party fought with the Colorado Party for dominance of the country during the first half of the 20th century. By the end of the Alfredo Stroessner regime the Liberal Party of Paraguay no longer existed, but its political successor, the Authentic Radical Liberal Party, is now the second largest political party in the country.

• Politics of Paraguay
• List of political parties by country
• Liberalism and radicalism in Paraguay