West Sayville is a hamlet and census-designated place (CDP) in Suffolk County, New York, United States.

George Washington stopped at this historic house during a tour of Long Island to rest and refresh himself and his horses in 1790.

Edith Corse Evans, heir to a hide-tanning and real estate fortune with a West Sayville summer home, was a passenger on the Titanic.

During the sinking of the Titanic on April 15, 1912, Edith Corse Evans gave up the last seat on the last lifeboat to save a mother of six children.

[citation needed] The West Sayville Radio Station at Cherry Avenue was a German Telefunken wireless transmitter built in 1912 to broadcast primarily to Germany.

[8] In 1915, the transmitter allegedly relayed a message from the German Embassy to "get Lucy", referring to the RMS Lusitania which was sunk on May 7.

Whether the signals coming from the transmitter in Sayville authorized the attack or not, they caused concern for the US government, which was raised again when it was used in the transmission of the Zimmermann Telegram by Germany to Mexico to request their assistance in the invasion of the United States during World War I.

They are a certified New York State Department of Health, Emergency Medical Service agency that provides Advanced Life Support (ALS) care.

West Sayville is also home to the Suffolk County Police Department Detectives Association, located at 465 Main Street.