Gotthard A. Dahlberg (July 17, 1884 – October 8, 1948) was an American lawyer and politician.

Gotthard A. Dahlberg was born at Hjo, in Västra Götaland, Sweden.

He emigrated with his parents to the United States, in 1890, and settled in Chicago, Illinois.

From 1915 to 1925, Dahlberg served in the Illinois House of Representatives and was a Republican.

After he left the Illinois General Assembly, Dahlberg continue to practice law and was attorney for the Chicago Board of Local Improvements.