Mikkel Küno Møllegaard Laugesen Grundtvig[1] (born 30 June 2002) is a Danish racing driver.

Grundtvig started racing in karting competitions in 2015, when he drove in the Danish Rotax Max Challenge.

In 2017 Grundtvig made his single-seater debut in the Aquila Synergy Cup with Young Factory Racing.

Grundtvig made the step-up to race in the GB3 Championship in 2021, partnering Roberto Faria at Fortec Motorsports.

[9] The following round at Spa-Francochamps the Dane achieved a second place in the reversed-grid race, completing a Fortec one-two lockout along with teammate Faria.