| Personal information | |
|---|---|
| Nationality | |
| Born | 20 June 1979 Puhja, Estonia |
| World Rally Championship record | |
| Active years | 2003–2015, 2017–2020 |
| Driver | |
| Teams | OT Racing |
| Rallies | 103 |
| Championships | 0 |
| Rally wins | 0 |
| Podiums | 1 |
| Stage wins | 15 |
| First rally | 2003 Monte Carlo Rally |
| Last rally | 2020 Rally Estonia |
Kuldar Sikk (born 20 June 1979) is an Estonian rally co-driver. From 2026, he is the co-driver of Urvo Männama. Sikk holds the record for the best overall result in a car class in the Baltics as well as for an Estonian co-driver.
| Year | Class | Starting number | Driver | Vehicle | Position |
|---|---|---|---|---|---|
| 2023 | Car | 214 | DNF (4/14) | ||
| 2024 | Car | 223 | 8 |
Sikk began his co-driver in 1998, co-driving for several drivers. In the 2003 Monte Carlo Rally, he made his WRC debut in a Suzuki Ignis S1600. The rally also marks the beginning of the partnership with Urmo Aava.

From 2010, Sikk became the co-driver of the rising star Ott Tänak. Two years later, in the 2012 Rally Sweden, the Estonian crew took their first stage win on SS14. Another five rounds later, Sikk achieved his first and only WRC podium finish.
After a short partnership with the Ukrainian rally driver Yuriy Protasov, Sikk was co-driving for three more drivers in 2016 and 2017.
Starting from 2018 Rally Sweden, Sikk became the co-driver of Ken Torn in the Junior World Rally Championship.
In 2026, it was announced that Sikk will partner up with Urvo Männama and they will start in the 2026 Rallye du Maroc to test for the upcoming Dakar Rally. They finished the rally in 17th place.
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