Ilya Uladzimiravich Ivashka (Belarusian: Ілья Уладзіміравіч Івашка; Russian: Илья Владимирович Ивашко, romanized: Ilya Vladimirovich Ivashko; born 24 February 1994) is an inactive Belarusian professional tennis player.

Fellow tennis player Karen Khachanov is his brother-in-law, their wives being (twin) sisters.

193, defeating Laslo Djere, second seed Stan Wawrinka 6–4, 1–1 when the Swiss retired, home favourite Nicolas Mahut in three sets.

[2] He entered the top 100 on 13 August 2018 after a third-round run also as a qualifier, where he lost to fourth seed Kevin Anderson, for the first time in his career at a Masters 1000 level at the 2018 Canadian Open.

79, achieved on 28 June 2021, on his debut in the main draw at Wimbledon, Ivashka reached the fourth round of a major for the first time in his career defeating Jaume Munar, Jérémy Chardy and Jordan Thompson, having never passed the second round of a major previously.

[6] He lost to eventual finalist, seventh seed Matteo Berrettini but reached a career-high of world No.

At the US Open, he reached the third round for the first time in his career defeating Tennys Sandgren and Vasek Pospisil before losing again to the sixth seed Matteo Berrettini.

Ivashka withdrew from the Melbourne Summer Set 1, Sydney Classic, and the Australian Open due to a leg injury.

At the Atlanta Open, he reached the semifinals before losing to eventual champion Alex de Minaur.

[18] Next he defeated 26th seed Lorenzo Musetti to reach the fourth round of a major for the second time in his career.

[20] At the 2022 Sofia Open he defeated Mikael Ymer in an over 3 hours match[21] and third seed Grigor Dimitrov to reach the quarterfinals.

[27] He won his second-round match when his opponent, 28th seed Botic van de Zandschulp, had to retire.

[35] At the BNP Paribas Primrose Bordeaux, he lost in the first round to seventh seed and eventual finalist, Tomás Martín Etcheverry.

[37] He lost in the first round at the 2023 French Open but recorded a win at the 2023 Wimbledon Championships over Federico Coria before losing to 21st seed Grigor Dimitrov.

Philipp Oswald Pedro Sousa Andreas Mies Mikolaj Jedruszczak Kamil Majchrzak