Domachowo is a village in the administrative district of Gmina Trąbki Wielkie, within Gdańsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 km north-west of Trąbki Wielkie, 13 km south-west of Pruszcz Gdański, and 21 km south-west of the regional capital Gdańsk. It is located in the historic region of Pomerania. Domachowo was a private village of Polish nobility, including the Hertmański, Prądzyński and Zboiński families.