Carl Rudolf "Rudy" Berghult II (April 15, 1905 – February 16, 2000) was an American politician who served as the 26th mayor of Duluth, Minnesota from 1937 to 1941.^[1]

Berghult was born in Duluth, Minnesota on April 15, 1985 to Carl Emil Berghult and Ida Mathilda Carlsson. Both of his parents were immigrants from Swedenf who originated from Långasjö and Torsås.

Berghult attended Denfeld High School, graduating in 1923. Following this, he studied faculty at Gustavus Adolphus College.

In 1937, Berghult was elected to serve as the 26th mayor of Duluth, Minnesota until 1941. At the age of 31, Berghult was the youngest mayor of a U.S. city with a population larger than 100,000, as well as the first native-born mayor of Duluth, Minnesota.

Berghult was credited with secured government funding for the Blatnik Bridge and working to beautify the city's public land as mayor, in addition to revising the city's debt structure and beginning several health and work programs for its citizens.

Berghult was preceded by Samuel F. Snively and succeeded by Edward H. Hatch.

Following his tenure as mayor, Berghult joined the United States Navy, earning recognition for his service at Normandy Beach and in Norway. He retired as a commander.^[2]

Berghult resided in Duluth for the entirety of his life. He married Eva Louise Drewes, with whom he had two children.^[3]

Berghult died at the age of 94 in Arlington, Texas on February 16, 2000. Berghult was cremated; his ashes were interred at Oneota Cemetery, located in Duluth.^[4]

• List of mayors of Duluth, Minnesota