Galgamácsa is a village in Pest county, Hungary.

[3] Since 1977, the village has had a museum, the Vankóné Dudás Juli Memorial House, dedicated primarily to the work of folk artist Juli Vankóné Dudás, born in Galgamácsa.

88.5% of the population described themselves as Hungarian, 0.9% as Roma, 0.4% as Bulgarian, 0.4% as German, 0.3% as Slovak, 0.2% as Romanian, 0.1% as Serbian, 0.3% as other non-Hungarian, and 11.5% did not answer.

Most of the population is Roman Catholic (55.3%), with a sizeable minority of Lutherans and other Protestants and those who identified not belonging to a religious denomination.

In the 14th century Turkish occupation, all of the buildings of the village except the church were destroyed.