| First Name | Thayer |
| Last Name | David |
| Full Name at Birth | David Thayer Hersey |
| Other Names | Thayer David |
| Age | 51 (age at death) |
| Date of Birth | March 4, 1927 |
| Birthplace | Medford, Massachusetts |
| Date of Death | July 17, 1978 |
| Location of Death | New York City, New York |
| Cause of Death | heart attack |
| Build | Average |
| Hair Color | Brown - Dark |
| Star Sign | Pisces |
| Ethnicity | White |
| Nationality | American |
| Occupation | Actor |
| Occupation Category | Actor |
| Claim to Fame | Rocky |
Thayer David (born David Thayer Hersey, March 4, 1927 – July 17, 1978) was a film, stage and television actor. He was best known for his work on the cult ABC serial Dark Shadows (1966–1971) and as the fight promoter George Jergens in the Oscar-winning movie Rocky in 1976. He also appeared as Count Arne Saknussemm in the film Journey to the Center of the Earth in 1959. His raspy distinctive voice narrated many voice-overs in commercials and narrations of instructional films and commercials.
Selected Thayer David film and TV show credits: