William Paul Jarrett (August 22, 1877 – November 10, 1929) was a sheriff and congressional delegate representing the Territory of Hawaii.

Jarrett was born August 22, 1877, and grew up in Honolulu, Hawaii, on the island of Oahu, and attended Saint Louis School. Of Native Hawaiian descent, his father was William Kaauwai Jarrett and mother was Emma Kaoo Stevens. He married Mary H. K. Clark with whom he had six children.^[1][2]

Jarrett became one of the earliest leaders of the Hawaii Democratic Party. Jarrett served as deputy Sheriff of the City and County of Honolulu from 1906 to 1908, Sheriff until 1914,^[3] and High Sheriff of the Territory of Hawaii from 1914 to 1922.^[4]

From March 4, 1923, to March 3, 1927, Jarrett served in the United States Congress as a territorial delegate. He won elections in November 1922 and 1924, but lost the bid for re-election in 1927. He died on November 10, 1929.^[5]

He was interred at Diamond Head Memorial Park. William P. Jarrett Middle School, established in 1955, was named after him.^[6]

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