Herfølge Boldklub was a Danish football club founded in 1921.

It is based in Herfølge, a southern suburb of Køge in the eastern part of Zealand.

On 27 February 2007, the club agreed, at an extraordinary general meeting, a professional football merger with Køge Boldklub, to form HB Køge.

The merger was halted by the Danish Football Association in March 2007, due to a missed deadline.

Because Køge Boldklub got into financial problems in April 2007, the merger was abandoned.