Improved commercial version with 800HP Wright R-1300-3 cyclone engine. 
List of Operators of S-55C |
| Years | Model | Org | |
|---|---|---|---|
| 1954/?? | S-55 H-19 |  Bharatiya Vayu Sena | |
| 1955/?? | S-55 H-19 |  Japan Ground Self-Defense Force | |
| 1956/68 | S-55 H-19 |  Suid-Afrikaanse Lugmag | |
| 1957/90 | S-55 H-19 |  Fuerza Aerea de Chile | |
| 1957/66 | S-55 H-19 |  Flyvevåbnet | |
| 1957/69 | S-55 H-19 |  Fuerza Aerea Republica Dominicana | |
| 1957/?? | S-55 H-19 | Japan Air Self-Defense Force | |
| 1958/66 | S-55 H-19 |  Royal Canadian Air Force (1945-1968) | |
| 1964 |  Força Aeronaval da Marinha do Brasil | ||
| 1968/72 | Autair Helicopters |
Global Distribution of S-55C |
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