| Do you agree with the Slovak Republic becoming a member state of the European Union? | |
| Date: | 16 and 17 May 2003 |
| Country: | Slovakia |
| Yes: | 2,012,870 |
| No: | 135,031 |
| Invalid: | 27,488 |
| Electorate: | 4,174,097 |
A referendum on joining the European Union was held in Slovakia on 16 and 17 May 2003.[1] It was approved by 93.7% of those voting, and Slovakia subsequently joined the EU on 1 May 2004. It remains the only referendum in the country's history to have not failed due to insufficient voter turnout.