Theodore E. Peiser (1853 - 1922) was an early photographer in Seattle, Washington and the Pacific Northwest.^[1] His studio and many of his photographs were lost in the Great Seattle Fire of 1889.^[2] His surviving photographs include one of the few photographs of the Seattle skyline from Beacon Hill before the fire^[3] as well as the Yesler-Leary Building in 1885, several years before it burned in the fire. He also captured the first and second Occidental Hotel buildings that preceded the Seattle Hotel and Sinking Ship. He also documented the debut of the first Seattle Street Railway horse-drawn streetcar in 1884 with mayor John Leary.

Peiser photographed the memorial service for assassinated U.S. president James Garfield held in Occidental Square in front of the Occidental Hotel on September 27, 1881. He also captured the territory's legislators in 1883.

Peiser photographed the Washington Husky football team in 1900, not long after statehood and the school's transition from being Territorial University of Washington. He also photographed Arthur A. Denny^[4] and a then elderly pioneer Carson D. Boren. He captured images of the area's legislators, such as Samuel H. Piles addressing a crowd at the dedication of the Alki Point Monument. He also photographed Henry Yesler and his wife Sarah.

Peiser photographed groups of students and faculty at the Territorial University (predecessor of University of Washington). His images also included Soapy Smith.^[5]

Peiser photographed sights at Alki Point including bathers at Alki Beach and the Stockade Hotel on the day a pioneer monument (Alki Point Monument) was being dedicated.^[6] He also photographed firemen^[7] and community leaders such as businessmen.^[8]

Peiser lived at 7543 Sunnyside Avenue in Seattle. After the fire and its devastation to his business he fell ill. His doctor advised him to move to California and he planned to sell off his remaining photographic works and equipment.^[2]

Peiser moved to California in 1907. He died there in 1922.