Theodore Newell Haller (1864 – 1930, aged 65-66) was a prominent American businessman, attorney, writer, and civic leader in Seattle, Washington.
Theodore Haller (Morris) was the son of Henrietta and Granville O. Haller, a former Civil War officer and one of Seattle's leading postbellum businessmen.
After being educated at Yale University, he returned to Seattle and graduated from law school.
In 1905, he platted a cluster of lots around the lake that would bear his name.
This article about an American businessperson born in the 1860s is a stub.