Kersti Kaljulaid (Estonian pronunciation: [ˈkersti ˈkɑljuˈlɑi̯d]; born December 30, 1969) is an Estonian politician who served as the fifth president of Estonia between 2016 and 2021. She was also the first and only female head of state of Estonia since the country declared independence in 1918, as well as the youngest president, aged 46 at the time of her election.

Kaljulaid, a state official who at the time served as Estonia's representative in the European Court of Auditors, entered the 2016 Estonian presidential election race at the sixth round after five previous unsuccessful rounds. She was nominated on 30 September 2016 by the majority of parliamentary parties as a joint candidate for president, as the only official candidate for the sixth round. Kaljulaid was voted president on 3 October 2016, with 81 votes and 17 abstentions