Robert Justin Miller[1] (November 17, 1888 – January 17, 1973) was a associate justice of the United States Court of Appeals for the District of Columbia.

He entered private practice in Hanford, Fresno, and San Francisco, California from 1914 to 1921.

He was an attorney and executive officer of the California State Commission on Immigration and Housing from 1919 to 1921.

[2] Miler was nominated by President Franklin D. Roosevelt on August 20, 1937, to an Associate Justice seat on the United States Court of Appeals for the District of Columbia (now the United States Court of Appeals for the District of Columbia Circuit) vacated by Associate Justice Josiah Alexander Van Orsdel.

He was Chairman of the Board and general counsel for the National Association of Radio and Television Broadcasters starting in 1951.