Congregation Adas Emuno is a Reform Jewish congregation and synagogue in Leonia, Bergen County, New Jersey, in the United States.

They moved into a new synagogue in 1873, and received a donation of a Torah scroll at that time.

[2][3] In 1971, the congregation moved to Leonia, to a brick building purchased from the Holy Trinity Lutheran Church.

The larger, and slightly more recent cemetery is sited in North Arlington, NJ, across Belleville Turnpike from the Arlington Memorial Park.

While the main gate for the cemetery shows Hebrew year 5669 (generally corresponding to 1909), there are gravestones dating as early as 1899 within the section.