Walter Wilbert Westall (October 9, 1880, in Cornwall, Orange County, New York – June 4, 1968) was an American lawyer and politician from New York.

He was the son of John Wendt Westall Jr.

Later he removed to White Plains, and practiced law in Westchester County and New York City.

Westall was a member of the New York State Assembly (Westchester Co., 2nd D.) in 1919, 1920, 1921 and 1922.

He was Secretary of the Westchester County Republican Committee from 1945 until his death in 1968.