The Great Southern Leader was a newspaper published in Pingelly and Narrogin, Western Australia from 1907 until 1934.
From its launch in 1907 until November 1909, two editions of the Great Southern Leader were published; the Pingelly-Cuballing edition and the Narrogin-Williams edition. In January 1908, these were renamed the Pingelly edition and the Narrogin-Williams-Cuballing edition. The Pingelly-Cuballing edition incorporated The Pingelly Leader.
The first issue of the Great Southern Leader featured a quote from the French writer Victor Hugo:
Of the inclusion of this quote and the accompanying byline, the Sunday Times remarked "Modesty is a pronounced characteristic of the Great Southern editor".
The office and printing works of the newspaper at Narrogin were destroyed by fire on 1 February 1926, with the cost of the damage estimated to have been ã5000 ().