Edward Dexter Holbrook (May 6, 1836 – June 18, 1870) was an American lawyer and politician who served as a congressional delegate for the Idaho Territory from 1865 to 1869.

Born in Elyria, Ohio, Holbrook attended public schools and earned a Bachelor of Laws from Oberlin College.

He was admitted to the bar in 1859 and practiced law in Elyria, Ohio; Weaverville, California; and Placerville, Idaho.

He was censured by the United States House of Representatives on February 4, 1869, for use of unparliamentary language and did not stand as a candidate for re-election.

This article incorporates public domain material from the Biographical Directory of the United States Congress