Congregation Beth Israel is a Reform Jewish congregation and synagogue, located at 1931 NW Flanders Street, Portland, Oregon, in the United States.

[3]: 14 This early structure was replaced by an 1889 synagogue building, which was destroyed by fire in December 1923.

[4][5] Designed by Portland architect Warren H. Williams, the building, described as Moorish Revival design in some sources,[5] is elsewhere described as a combination of eclectic and Gothic Revival styles, with two towers topped by bulbous domes.

This building was listed as Temple Beth Israel on the National Register of Historic Places in 1979,[6] and is considered one of the finest examples of Neo-Byzantine-style architecture on the west coast.

The building was inspired by the Alte Synagoge (Steelerstrasse Synagogue) in Essen, Germany.