Nanaimo—Cowichan is a former federal electoral district in British Columbia, Canada, which was represented in the House of Commons of Canada between 1988 and 2015. It was located on Vancouver Island.

Population, 2001	116,754
Electors	86,804
Area (km)
Population density (people per km)

It included, together with more rural areas, the southern portion of the City of Nanaimo, the City of Duncan, the Town of Ladysmith, and the District of North Cowichan.

The electoral district was created in 1987 from parts of Nanaimo–Alberni and Cowichan—Malahat—The Islands ridings.

The 2012 electoral redistribution saw this riding dissolved into the new ridings of Cowichan—Malahat—Langford and Nanaimo—Ladysmith for the 2015 election.

This riding has elected the following members of Parliament:

Parliament	Years	Member		Party
Riding created from Nanaimo—Alberni and Cowichan—Malahat—The Islands
34th	1988–1993		David Stupich	New Democratic
35th	1993–1997		Bob Ringma	Reform
36th	1997–2000		Reed Elley
	2000–2000			Alliance
37th	2000–2003
	2003–2004			Conservative
38th	2004–2006		Jean Crowder	New Democratic
39th	2006–2008
40th	2008–2011
41st	2011–2015
Riding dissolved into Cowichan—Malahat—Langford and Nanaimo—Ladysmith

2011 Canadian federal election
Party	Candidate	Votes	%	±%
	New Democratic	Jean Crowder	31,272	48.90	+3.72
	Conservative	John Koury	24,497	38.31	+0.72
	Green	Anne Marie Benoit	5,005	7.83	-1.73
	Liberal	Brian Fillmore	3,007	4.70	-2.67
	Marxist–Leninist	Jack East	170	0.27	-0.12
Total valid votes			63,951	100.0
Total rejected ballots			162	0.25	-0.01
Turnout			64,113	65.16	+1.71
Eligible voters			98,399
	New Democratic hold		Swing		+1.50

2008 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	New Democratic	Jean Crowder	27,454	45.18	-1.59	$77,175
	Conservative	Reed Elley	22,844	37.59	+5.47	$85,776
	Green	Christina Knighton	5,816	9.56	+4.48	$6,368
	Liberal	Brian Scott	4,483	7.37	-7.94	$19,279
	Marxist–Leninist	Jack East	182	0.39	+0.15
Total valid votes/Expense limit			60,779	100.0		$94,753
Total rejected ballots			156	0.26
Turnout			60,935	63.45
	New Democratic hold		Swing		-3.53

2006 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	New Democratic	Jean Crowder	28,558	46.77	+3.06	$58,554
	Conservative	Norm Sowden	19,615	32.12	-0.65
	Liberal	Brian Scott	9,352	15.31	-0.71	$14,209
	Green	Harold Henn	3,107	5.08	-1.53	$1,476
	Canadian Action	Jeff Warr	227	0.45	-0.01	$913
	Marxist–Leninist	Jack East	148	0.24	–
Total valid votes			61,057	100.0
Total rejected ballots			135	0.22
Turnout			61,192
	New Democratic hold		Swing		+1.86

2004 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	New Democratic	Jean Crowder	25,243	43.71	+26.75	$63,401
	Conservative	Dave Quist	18,928	32.77	-21.04	$62,967
	Liberal	Lloyd Macilquham	9,257	16.02	-5.39	$16,671
	Green	Harold Henn	3,822	6.61	+4.26
	Canadian Action	Jeffrey Ian Warr	270	0.46	-2.49
	Independent	Brunie Brunie	229	0.39	–	$635
Total valid votes			57,749	100.0
Total rejected ballots			147	0.25	-0.07
Turnout			57,896	66.70
	New Democratic gain from Conservative		Swing		+23.90
Conservative vote is compared to the total of the Canadian Alliance vote and Progressive Conservative vote in the 2000 election.

2000 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Alliance	Reed Elley	23,641	46.63	+1.68	$50,405
	Liberal	Marshall Cooper	10,857	21.41	+0.28	$24,987
	New Democratic	Garth Mirau	8,599	16.96	-9.02	$33,131
	Progressive Conservative	Cynthia-Mary Hemsworth	3,640	7.18	+2.96	$993
	Canadian Action	Doug Catley	1,500	2.95	+1.53	$2,916
	Marijuana	Meaghan Walker-Williams	1,262	2.48	–
	Green	Norm Abbey	1,196	2.35	+0.52	$990
Total valid votes			50,695	100.0
Total rejected ballots			164	0.32	-0.09
Turnout			50,859	64.56	-0.65
	Alliance hold		Swing		+0.70
Canadian Alliance vote is compared to the Reform vote in the 1997 election.

1997 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Reform	Reed Elley	22,685	44.95	+5.12	$44,831
	New Democratic	Garth Mirau	13,112	25.98	+3.53	$58,293
	Liberal	Michael Garland Coleman	10,663	21.13	-0.57	$19,351
	Progressive Conservative	Lindsay Parcells	2,131	4.22	-4.51	$4,777
	Green	Karen Margo Shillington	928	1.83	–	$996
	Canadian Action	Doug Catley	720	1.42	–	$1,783
	Natural Law	Frank S. James Malaka	224	0.44	-0.35
Total valid votes			50,463	100.0
Total rejected ballots			206	0.41
Turnout			50,669	65.21
	Reform hold		Swing		+0.80

1993 Canadian federal election
Party	Candidate	Votes	%	±%
	Reform	Bob Ringma	25,052	39.83	+33.84
	New Democratic	David Stupich	14,117	22.45	-26.67
	Liberal	Ron Cantelon	13,647	21.70	+12.28
	Progressive Conservative	Bruce Wilbee	5,491	8.73	-25.58
	National	Larry Whaley	3,407	5.42	–
	Natural Law	Cliff Brown	497	0.79	–
	Libertarian	Mark Alan Chase	245	0.39	–
	Independent	R. W. Jackson	163	0.26	–
	Independent	Bruce Tober	158	0.25	–
	Canada Party	Neall Lenard	115	0.18	–
Total valid votes			62,892	100.0
	Reform gain from New Democratic		Swing		+30.26

1988 Canadian federal election
Party	Candidate	Votes	%
	New Democratic	David Stupich	27,177	49.12
	Progressive Conservative	Ted Schellenberg	18,984	34.31
	Liberal	Denis St. Denis	5,210	9.42
	Reform	George Richard Wrean	3,314	5.99
	Green	Seymour Trieger	484	0.87
	Communist	Deborah MacDonald	164	0.30
Total valid votes			55,333	100.0
This riding was created from parts of Nanaimo—Alberni and Cowichan—Malahat—The Islands, which elected a Progressive Conservative and a New Democrat, respectively, in the last election. Ted Schellenberg was the incumbent from Nanaimo—Alberni.

• List of Canadian federal electoral districts
• Historical federal electoral districts of Canada

• "Nanaimo—Cowichan (Code 59015) Census Profile". 2011 census. Government of Canada - Statistics Canada. Retrieved 2011-03-06.
• National Post article on Canadian troops
• Library of Parliament Riding Profile
• Campaign expense data from Elections Canada – 2008
• Expenditures - 2004
• Expenditures – 2000
• Expenditures – 1997

• Website of the Parliament of Canada
• Map of Nanaimo—Cowichan riding archived by Elections Canada
• Imagine the Cowichan, part of Simon Fraser University's Imagine BC series