Kaido Külaots (born 28 February 1976) is an Estonian chess player.

[4] He tied for 1st–2nd with Evgeny Alekseev at the Rector Cup, Kharkiv 2003[5][6] and with Vladislav Nevednichy at Paks 2003,[7] tied for 1st–6th with Evgeniy Najer, Artyom Timofeev, Zoltan Gyimesi, Sergey Grigoriants and Oleg Korneev at the Cappelle-la-Grande Open 2004,[8] tied for 1st–2nd with Artjom Smirnov at the Paul Keres Chess Festival in Tallinn 2004,[9] came 2nd behind Sergei Tiviakov and ahead of Oleg Korneev at the Gausdal Classics 2005,[10] came 1st at the Heart of Finland Open in Jyväskylä 2008,[11] tied for 1st–3rd with Róbert Ruck and Gabor Papp at the 1st Gedeon Barcza Memorial 2008,[12] tied for 3rd–6th with Šarūnas Šulskis, Tiger Hillarp Persson and Hans Tikkanen at Borup 2010[13] and won the 1st Festival Gif-sur-Yvette 2010.

[15] In February 2019 Külaots won the Aeroflot Open edging out Haik Martirosyan on tiebreak, after both players scored 7/9 points.

Thanks to this victory, Külaots earned an invitation to play in the Dortmund Sparkassen Chess Meeting.

[16][17] Külaots is one of the few players to have a positive lifetime record against World Champion Magnus Carlsen.