Gdańsk Scientific Society (Polish: Gdańskie Towarzystwo Naukowe, GTN) is a general scientific society in Gdańsk (German:Danzig) , Poland.

It was established in 1922 as Society of the Sciences and Arts Friends in Gdańsk (Towarzystwo Przyjaciół Nauki i Sztuki w Gdańsku) and was active till 1939, abolished during World War II, reactivated in 1945, present name since 1956.

Today it has 5 divisions. Main publications:

• Gdansk Yearbook (Rocznik Gdański)
• Acta Biologica