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Tigard is a city in Washington County, Oregon, in the Portland metropolitan area, and with 54,539 residents at the 2020 census it was the 12th most populous city in Oregon.

The 2020 census counted 21,803 households in Tigard, and the city's population grew from 6,499 in 1970 to 48,035 in 2010 and 54,539 in 2020.

Before colonization, the Atfalati people inhabited the Tualatin Valley in villages including Chachimahiyuk, near present-day Tigard, and regularly burned the valley floor to encourage camas growth and deer and elk habitat.

Wilson M. Tigard arrived in the area known as East Butte in 1852, and the community was renamed Tigardville in 1886 before the railroad renamed it Tigard in 1907 to distinguish it from nearby Wilsonville.

The arrival of the Oregon Electric Railway in 1910 triggered the development of Main Street and pushed Tigardville from a small farming community toward growth that led to its incorporation as a city in 1961.

Tigard was the respondent in the landmark 1994 United States Supreme Court property rights case Dolan v. City of Tigard, which established the rough proportionality test now applied nationwide to land-use exactions.

In the 2004 general election, Tigard voters approved annexing the unincorporated suburbs on Bull Mountain, a hill west of the city, though residents there have resisted annexation.

Interstate 5 and Oregon Route 217 are the city's main freeways, and public transit is provided by TriMet buses and the WES Commuter Rail line.

Tigard is home to Washington Square mall, one of the largest malls in Oregon, and companies based in the city include Consumer Cellular, Gerber Legendary Blades, and Stash Tea Company.

Cook Park, the city's largest park, lies along the Tualatin River and offers picnicking, trails, and kayaking, and the city is served by the Tigard-Tualatin School District, including Tigard High School, which opened in 1927 and has offered the International Baccalaureate curriculum since 1987.