Temple Emanuel, Reform synagogue in Hilltop district of Denver, United States.

Temple Emanuel is a Reform Jewish congregation and synagogue at 51 Grape Street in Denver's Hilltop neighborhood, built in 1956 and listed on the National Register of Historic Places in 2003. Its earlier homes were the Curtis Street building of 1882, gutted by fire in 1897, and the Pearl Street synagogue of 1898–1899, designed by John J. Humphreys and expanded in 1924 by Thielman Robert Wieger.

The congregation started in 1874 with 22 members and dedicated its first building in 1875. This early Jewish community helped shape the religious and cultural landscape of developing Denver.

The congregation's 1898 Pearl Street synagogue, designed by John J. Humphreys, was the only synagogue in Denver and Colorado built in the Eastern-Islamic style. German Jews influenced by Reform Judaism and European anti-Semitism adopted this mode, acceptable for a house of worship yet not immediately marking it as a traditional synagogue, while evoking Jewish origins in the Near East.

The building sits in the Hilltop neighborhood with accessible locations and parking available nearby. Visitors should check ahead about current events and visiting times, as hours may vary depending on programs and services happening.

The 1949 claim of being the oldest and largest synagogue between Kansas City and the West Coast referred to the congregation, not the current Grape Street building, which was built in 1956. The congregation's Pearl Street synagogue of 1898–1899, designed by John J. Humphreys, is the one cited as Colorado's only synagogue in the Eastern-Islamic style.