William Edgar Tuttle Jr. (December 10, 1870 – February 11, 1923) was an American Democratic Party politician who represented New Jersey's 5th congressional district in the United States House of Representatives for two terms from 1911 to 1915.

He graduated from Horseheads High School and Elmira Free Academy in 1887 and attended Cornell University for two years.

Tuttle was elected as a Democrat to the Sixty-second and Sixty-third Congresses, serving in office from March 4, 1911 – March 3, 1915, but was an unsuccessful candidate for reelection in 1914 to the Sixty-fourth Congress.

He was United States commissioner to the Panama-Pacific International Exposition in 1916.

Tuttle died in Westfield on February 11, 1923. he was interred in Maple Grove Cemetery in Horseheads, New York.