On 30 March 1921, 30 young people from the football department of Lyngby IF decided to break away and start their own club.

1996 was also the year when Lyngby's chairmen, Flemming Østergaard and Michael Kjær sold team captain Larsen to FC Copenhagen.

Hardly surprising, the team finished the season in last place and was subsequently relegated an additional two leagues due to the bankruptcy.

This led to the departure of several key players, before, on 9 February 2018, the club was bought and saved by a group of local business people and fans known collectively as Friends of Lyngby.

Division, won 3–2 on aggregate against Vendsyssel FF, securing its re-promotion to the top flight.

[2] On May 28, 2024, it was announced that Philadelphia based Union Sports and Entertainment had entered into a strategic partnership with Lyngby Boldklub, also acquiring a minority stake in the club.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Among former players are former Danish internationals Flemming Christensen, John Helt, Klaus Berggreen, Ronnie Ekelund, Torben Frank, Jakob Friis-Hansen, Henrik Larsen, Miklos Molnar, Claus "Kuno" Christiansen, Carsten Fredgaard, Claus Jensen, Bent Christensen, Peter Nielsen, Niclas Jensen, Dennis Rommedahl, Thomas Kristensen, Morten Nordstrand, Anders Christiansen, Mikkel Beckmann and Yussuf Poulsen.

These include Yussuf Poulsen, Frederik Sørensen, Christian Gytkjær, Andreas Bjelland, Lasse Schöne, Morten Nordstrand, Dennis Rommedahl and Thomas Kristensen.