Frederik Fisker Nielsen (born 7 February 1998) is a Danish football player who plays as a centre-back.
Fisker joined Sheffield Wednesday in September 2017.
In January 2018 he made his first team debut for the club, playing the whole game as Wednesday beat Carlisle United in the third round replay of the FA Cup.
On 25 September 2019 it was confirmed, that Fisker had returned to Denmark and signed a contract for the rest of 2019 with Skive IK. On 21 January 2019 he signed a new contract until the summer 2021. Fisker left Skive at the end of the 2021âÂÂ22 season.