| John Giffen Weinmann | |
| Office: | 25th Chief of Protocol of the United States |
| Term Start: | October 31, 1991 |
| Term End: | January 20, 1993 |
| President: | George H. W. Bush |
| Predecessor: | Joseph Verner Reed Jr. |
| Successor: | Molly M. Raiser |
| Office2: | United States Ambassador to Finland |
| Term Start2: | November 10, 1989 |
| Term End2: | August 29, 1991 |
| President2: | George H. W. Bush |
| Predecessor2: | Rockwell A. Schnabel |
| Successor2: | John Hubert Kelly |
| Birth Date: | 29 August 1928 |
| Alma Mater: | Tulane University |
John Giffen Weinmann (August 29, 1928[1] – June 9, 2016) served as United States Ambassador to Finland and later as the Chief of Protocol of the United States under President George H. W. Bush. He was appointed Ambassador to Finland on October 10, 1989, and presented his credentials on November 10 of that year. His tenure in Finland concluded on August 29, 1991, after being nominated to be Chief of Protocol on July 11, 1991. He succeeded Rockwell A. Schnabel and was succeeded by John Hubert Kelly.[2]
He served as Chief of Protocol from October 31, 1991, to January 20, 1993, succeeding Joseph Verner Reed, Jr. and being succeeded by Molly M. Raiser.[3]
He attended Tulane University.[4]