Sebastian Lykke Andersen (born 23 December 1988) is a retired Danish professional association football player who played as a left midfielder.

AC Horsens signed Andersen on a loan deal on 31 January 2011 for the rest of the season.

The relegation gave Andersen some more space in the squad and he played 25 games in his first season after his loan stay.

Andersen began training with Norwegian club, IK Start, after he left Viborg FF.

[8] In the same season, Hobro was promoted to the Danish Superliga again, however, Andersen didn't want to continue at the club.

On 30 May 2017 it was confirmed, that Andersen had joined Danish 1st Division club, Fremad Amager, on a free transfer.

[9] Andersen retired at the end of the 2018/19 season where he didn't play a single game due to a knee injury.