Template:1984 Ontario provincial by-elections/Ottawa Centre

Ontario provincial by-election, December 13, 1984: Ottawa Centre
Party	Candidate	Votes	%	±%
	New Democratic	Evelyn Gigantes	8,165	41.76	+4.99
	Progressive Conservative	Graham Bird	5,870	30.02	−4.38
	Liberal	Lowell Green	5,202	26.61	−0.73
	Green	Greg Vezina	130	0.66
	Independent	Ray Joseph Cormier	94	0.48
	Independent	John Turmel	90	0.46	−1.02
Total valid votes			19,551	100.0	−22.83
By-election called following Michael Cassidy's resignation to run federally.