Halton was a federal electoral district in Ontario, Canada, represented in the House of Commons of Canada from 1867 to 1988 before being abolished in an electoral district redistribution, and again from 1997 to 2015, when it was again abolished in another electoral district redistribution. When it was last contested in 2011, its population was 203,437, of whom 115,255 were eligible electors.

Halton riding was created by the British North America Act, 1867, and defined as Halton County.

In 1966, the riding was redefined to consist of the Towns of Milton and Oakville and the Township of Esquesing in the County of Halton, and the Township of Erin in the County of Wellington.

In 1976, it was redefined to consist of the Towns of Milton and Oakville, and the southern part of the Town of Halton Hills.

The electoral district was abolished in 1987 when it was redistributed between Halton—Peel and Oakville—Milton ridings.

In 1996, the riding was re-created to include the Town of Milton and the northern parts of the Town of Oakville and the City of Burlington, defined as:

• the Town of Milton,
• the part of the Town of Oakville lying northwest of a line drawn from northeast to southwest along Dundas Street West, southeaster along Eighth Line, and southwest along Upper Middle Road, and
• the part of the City of Burlington lying northwest of a line drawn from northeast to southwest along the Queen Elizabeth Way, northwest along Walkers Line, southwest along Upper Middle Road, northwest along Guelph Line, and southwest along Dundas Street.

In 2015, the riding of Halton was abolished and redistributed between Milton, Oakville North—Burlington, Burlington, Mississauga—Streetsville and Mississauga—Erin Mills.

This riding elected the following members of Parliament:

Parliament	Years	Member		Party
Halton
1st	1867–1872		John White	Liberal
2nd	1872–1874
3rd	1874–1875		Daniel Black Chisholm	Liberal–Conservative
	1875–1878		William McCraney	Liberal
4th	1878–1882		William McDougall	Liberal–Conservative
5th	1882–1887		William McCraney	Liberal
6th	1887–1888		John Waldie
	1888–1888		David Henderson	Conservative
	1888–1891		John Waldie	Liberal
7th	1891–1896		David Henderson	Conservative
8th	1896–1900
9th	1900–1904
10th	1904–1908
11th	1908–1911
12th	1911–1917
13th	1917–1921		Robert King Anderson
14th	1921–1925
15th	1925–1926
16th	1926–1930
17th	1930–1935
18th	1935–1940		Hughes Cleaver	Liberal–Progressive
19th	1940–1945			Liberal
20th	1945–1949
21st	1949–1953
22nd	1953–1957		Sybil Bennett	Progressive Conservative
23rd	1957–1958		Charles Alexander Best
24th	1958–1962
25th	1962–1963		Harry Harley	Liberal
26th	1963–1965
27th	1965–1968
28th	1968–1972		Rutherford Lester Whiting
29th	1972–1974		Terry O'Connor	Progressive Conservative
30th	1974–1979		Frank Philbrook	Liberal
31st	1979–1980		Otto Jelinek	Progressive Conservative
32nd	1980–1984
33rd	1984–1988
Riding dissolved into Halton—Peel and Oakville—Milton
Riding re-created from Halton—Peel, Oakville—Milton, Oakville and Burlington
36th	1997–2000		Julian Reed	Liberal
37th	2000–2004
38th	2004–2006		Gary Carr
39th	2006–2006		Garth Turner	Conservative
	2006–2007			Independent
	2007–2008			Liberal
40th	2008–2011		Lisa Raitt	Conservative
41st	2011–2015
Riding dissolved into Milton, Oakville North—Burlington, Burlington, Mississauga—Streetsville and Mississauga—Erin Mills