Walter Henri Dyett (also known as Captain Walter Henri Dyett; January 11, 1901 – November 17, 1969) was an American violinist and music educator in the Chicago Public Schools system.

Dyett served as musical director at DuSable High School from its opening in 1935 until 1962.

After studying pre-medical courses at University of California, Berkeley, Dyett returned to his home town of Chicago, where he worked in vaudeville orchestras and directed an Army band, after which he was known as Captain Dyett.

In 1931, he became assistant musical director and later musical director at Wendell Phillips High School in Chicago and, in 1935, moved to DuSable High School when it opened.

[10] He is commemorated by Dyett High School, a Chicago public high school located in the Washington Park neighborhood in Chicago.