| First Name | Sydney |
| Middle Name | Hughes |
| Last Name | Greenstreet |
| Full Name at Birth | Sydney Hughes Greenstreet |
| Age | 74 (age at death) |
| Date of Birth | December 27, 1879 |
| Birthplace | Sandwich, Kent, England |
| Date of Death | January 18, 1954 |
| Location of Death | Hollywood, California |
| Cause of Death | Diabetes |
| Build | Large |
| Hair Color | Grey |
| Star Sign | Capricorn |
| Ethnicity | White |
| Nationality | English |
| Occupation Category | Actor |
| Claim to Fame | Kaspar Gutman in The Maltese Falcon |
| Other Family Members | John Ogden Greenstreet (son)Mark Greenstreet (great-nephew) |
Sydney Hughes Greenstreet (27 December 1879 – 18 January 1954) was an English actor. He is best known for his Warner Bros. films with Humphrey Bogart and Peter Lorre, which include The Maltese Falcon (1941) and Casablanca (1942).
Selected Sydney Greenstreet film and TV show credits: