The Congress of Estonia (Estonian: Eesti Kongress) was a grassroots parliament elected in February 1990 in then Soviet-occupied Estonia and actively participating in the popular nonviolent resistance to the Soviet rule, which resulted in the restoration of the country's independence from the Soviet Union in August 1991.
In September 1991, a Constitutional Assembly was formed with half of its members elected from the Congress of Estonia to write a new constitution. The new Constitution of Estonia was approved by the referendum in June 1992, and the Congress dissolved itself in October 1992, once the freshly elected parliament of Estonia (Riigikogu) had been sworn in.