Armbrust is an unincorporated community which is located in Hempfield Township, Westmoreland County, Pennsylvania, United States.

[1] The community is situated along Pennsylvania Route 819, 1.8 miles (2.9 km) southeast of Youngwood.

[citation needed] Central (aka Feightner) Cemetery, located two miles north, contains twenty-nine gravestones with the surname Armbrust.

The oldest (based on date of death) is that of Margaret G. Armbrust, who died in 1895.

[4] Census records for the year 1900 show numerous people with the surname Armbrust living nearby in Hempfield Township.