A by-election was held for the New South Wales Legislative Assembly electorate of Ashfield on 9 November 1946 because of the resignation of Athol Richardson () to contest the federal seat of Parkes at the 1946 election. Richardson was narrowly defeated, and nominated as a candidate to regain the seat.
<includeonly> Athol Richardson () had resigned to contest the federal seat of Parkes at the 1946 election. When he was unsuccessful he then re-contested Ashfield.</includeonly>