Herstedøster Church (Danish: Herstedøster Kirke) is a church in the northern outskirts of Albertslund, Albertslund Municipality, Denmark. In medieval times, the Romanesque church was dedicated to Saint Nicholas. The tower is of late-Gothic origin. The church interior was given a major renovation in 1994 by Alan Havsteen-Mikkelsen. In 1973, R. Smalley discovered frescoes dated to around 1175, probably the date of origin of the church. On 1 February 2009 a major fire broke out at the church.