Gmina Suchy Dąb is a rural gmina (administrative district) in Gdańsk County, Pomeranian Voivodeship, in northern Poland. Its seat is the village of Suchy Dąb, which lies approximately 11 kilometres (7 mi) south-east of Pruszcz Gdański and 20 km (12 mi) south-east of the regional capital Gdańsk.

The gmina covers an area of 84.98 square kilometres (32.8 sq mi), and as of 2006 its total population is 3,832.

Gmina Suchy Dąb contains the villages and settlements of Grabina-Duchowne, Grabiny-Zameczek, Grabowe Pole, Grabowo, Koźliny, Krzywe Koło, Krzywe Koło-Kolonia, Osice, Ostrowite, Ptaszniki, Steblewo, Suchy Dąb and Wróblewo.

Gmina Suchy Dąb is bordered by the gminas of Cedry Wielkie, Lichnowy, Ostaszewo, Pruszcz Gdański, Pszczółki and Tczew.

• Polish official population figures 2006