This is a list of members of the Western Australian Legislative Assembly between the 1901 election and the 1904 election, together known as the Fourth Parliament. The names of parliamentary groupings, which were not formalised parties, were established prior to the 1901 election, with Ministerialists being those sympathetic to former Premier John Forrest, and Oppositionists and Independents defined accordingly. With the exit of Forrest from state politics following his successful shift to the federal Division of Swan, the Ministerial group was defeated in the election and had no obvious choice of leader, but the Opposition, led by George Leake, did not have sufficient numbers to govern in its own right. The failure of the Morgans Ministry in December 1901 after less than a month in office