Johan Fredrik Breda Storm (24 November 1836 – 26 October 1920) was a Norwegian professor, linguist and philologist.
His father, Ole Johan Storm (1806-1850) was the chaplain in Lom at the time of his birth.
In 1838, the family moved to Rendalen in Hedmark where his father was the parish priest and subsequently to Lardal in Vestfold.
His work Norsk Retskrivning in two volumes (1904 and 1906) was a factor in the Norwegian language conflict.
He received an honorary doctorate from the University of Edinburgh and was decorated Commander of the Royal Norwegian Order of St. Olav in 1904.