Cheasty Boulevard South

{{Short description|Route in Seattle, Washington, US}}

{{Use mdy dates|date=April 2025}}

{{Infobox street

| name = Cheasty Boulevard South

| marker_image =

| image = Seattle - Cheasty Blvd 02.jpg

| caption =

| former_names = Jefferson Boulevard

| length_mi = 1.3

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| location =

| client =

| maint = City of Seattle

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| commissioning_date =

| construction_start_date = 1903

| completion_date = 1910

{{Designation list | embed = yes

| designation1 = Seattle Landmark

| designation1_date = January 15, 2003{{cite web|title=Landmarks and Designation|publisher=City of Seattle|url=http://www.seattle.gov/neighborhoods/preservation/landmarks_listing.htm|accessdate=2013-03-04|archive-date=2013-03-06|archive-url=https://web.archive.org/web/20130306003250/http://www.seattle.gov/neighborhoods/preservation/landmarks_listing.htm|url-status=dead}}

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Cheasty Boulevard South is a {{convert|1.3|mi|km|adj=on}} route along the eastern edge of Seattle, Washington's Beacon Hill neighborhood. It was declared a City of Seattle landmark on January 15, 2003. Designed in 1903 as part of Seattle's Olmsted parks system, the property was acquired in 1910. Originally named Jefferson Boulevard (after Jefferson Park), it was renamed in 1914 after E.C. Cheasty of the Parks Board, a former commissioner of the Seattle Police Department and the Alaska–Yukon–Pacific Exposition."Cheasty Boulevard: Landmark Designation Success", [http://www.seattle.gov/friendsofolmstedparks/FSOP/FSOP0103news.pdf Olmsted News, Friends of Seattle's Olmsted Parks, Winter 2003] {{Webarchive|url=https://web.archive.org/web/20100602043222/http://www.seattle.gov/friendsofolmstedparks/FSOP/FSOP0103news.pdf |date=2010-06-02 }}, p. 7.[http://www.seattle.gov/PARKS/history/CheastyBlvd.pdf Cheasty Boulevard] {{Webarchive|url=https://web.archive.org/web/20061011090519/https://www.seattle.gov/parks/history/CheastyBlvd.pdf# |date=2006-10-11 }}, two sheets in Donald N. Sherwood's extensive notes about Seattle parks (compiled during Sherwood's 1955–1977 tenure as an engineer with the parks department).