The 1916 Drummoyne state by-election was held on 22 January 1916 to elect the member for Drummoyne in the New South Wales Legislative Assembly, following the death of Liberal Reform MP George Richards.
The by-election resulted in Liberal Reform candidate Alexander Graff finishing in first place with 47.32% of the vote, followed by candidate Frederick Parish on 21.24%. Because no candidate had received an absolute majority, a second round of voting was held one week later on 29 January 1962, which Graff won.