Morris "Moe" Biller (November 5, 1915 – September 5, 2003) was an American labor union leader.
[1][2] During World War II, Biller served in the Army Adjutant General Corps, then in 1945 he returned to his job.
Biller ruled that members of his union should not cross the letter carriers' picket lines, and in this way, he came to national prominence.
[1][2] Biller was elected as president of the union in 1980, in which role he negotiated several contracts which led to increased wages for members.
He worked closely with the letter carriers, and he successfully campaigned against Sears Roebuck being permitted to handle some post office business.