| Joseph Adolph Greenwald | |
| Office1: | 12th Assistant Secretary of State for Economic and Business Affairs |
| President1: | Gerald Ford |
| Term Start1: | February 11, 1976 |
| Term End1: | September 10, 1976 |
| Predecessor1: | Thomas O. Enders |
| Successor1: | Julius Katz |
| Office2: | 4th United States Ambassador to the European Union |
| President2: | Richard Nixon Gerald Ford |
| Term Start2: | October 12, 1972 |
| Term End2: | January 28, 1976 |
| Predecessor2: | J. Robert Schaetzel |
| Successor2: | Deane R. Hinton |
| Office3: | 4th United States Ambassador to the Organisation for Economic Co-operation and Development |
| President3: | Richard Nixon |
| Term Start3: | July 22, 1969 |
| Term End3: | October 12, 1972 |
| Predecessor3: | Philip H. Trezise |
| Successor3: | William C. Turner |
| Birth Date: | 18 September 1918 |
| Birth Place: | Chicago, Illinois |
| Death Place: | Washington, D.C. |
Joseph Adolph Greenwald (September 18, 1918 – October 30, 2000) was an American diplomat who served as the United States Ambassador to the Organisation for Economic Co-operation and Development from 1969 to 1972, the United States Ambassador to the European Union from 1972 to 1976 and as the Assistant Secretary of State for Economic and Business Affairs in 1976.[1] [2]
He died of leukemia on October 30, 2000, in Washington, D.C. at age 82.[3]