The 1914 Korong state by-election was held on 26 June 1914 to elect the next member for Korong in the Victorian Legislative Assembly, following the death of incumbent MP Thomas Langdon.
Langdon, a Liberal Party member, had been re-elected unopposed at the 1911 election. He died on 27 May 1914, aged 82.
The by-election was won by Achilles Gray, with both candidates being Liberals. A state election was held just months later on 26 November 1914, which was again contested by Gray and unsuccessful candidate William Williams.