Johan Fridtjuv Berg (20 March 1851 – 29 February 1916) was a Swedish school teacher, author, and politician (liberal); he was minister of education and ecclesiastical affairs from 1905 to 1906 and 1911 to 1914 and Member of Parliament from 1891 to 1916.

Johan Fridtjuv Berg was born 20 March 1851 in Ödeshögs parish, Östergötland county, Sweden.

Having previously spoken out only on educational and general humanitarian issues, he began to take an active part in political struggles in 1905.

When Karl Staaff formed a government on 7 November 1905, with the aim of reforming the electoral system based on majority representation, Berg became minister of education and ecclesiastical affairs.

Berg took a very active part in the political agitation of the summer and autumn of 1906, defending both in speech and in writing the general policy of the Staaff ministry and its electoral proposals.

The Lindman voting proposal was opposed by Berg both in lectures in various parts of the country and in the parliamentary debates in the spring of 1907.