David Kenneth Rush (January 17, 1910 – December 11, 1994) was a United States Ambassador who helped negotiate the groundbreaking Four-Power Agreement in 1971 that ended the post-war crisis over Berlin.

[1] After attending secondary schools in Greenville, Rush worked his way through the University of Tennessee by waiting on tables.

In 1937, Rush accepted an offer to join the Union Carbide and Carbon Corporation with the prospect of an executive position.

[1] Rush resigned from all private positions in 1969 to become United States Ambassador to West Germany.

The agreement ended more than two decades of east–west tensions over the divided former capital of Germany; it improved ties between Washington and Moscow, reaffirmed the Western Allies' rights in the city and paved the way for the development of peaceful relations between East and West Germany.