BPOE stands for Benevolent and Protective ORDER of Elks, a fraternal organization in the United States. The acronym is derived from the first letters of the three words in the organization's full name. The ELKS (4 letters) are members of the BPOE, while an ELK (3 letters) is a single member. The ORDER (5 letters) refers to the BPOE's mission of providing charitable services and promoting fellowship among its members.