| Calcutta International School | |
| Postalcode: | 700107 |
| Country: | India |
| Coordinates: | 22.5204°N 88.3979°W |
| Principal: | Tina Servaia |
| Average Class Size: | 24 students |
| Ratio: | 10 |
| Gender: | Coeducational |
| Houses: | Red, Yellow & Green |
| Schooltype: | Private |
| Grades: | Pre-Nursery - A2 |
| Age Range: | 3–18 |
| Hours In Day: | 3 to 7 hours |
| Sports: | Football, Basketball and Cricket |
| Colours: | Blue |
| Established: | 1953 |
| Sixth Form Students: | 60 |
Calcutta International School (or CIS) is an international school, established in the late 1953s, in Kolkata, India. It is located in 724 Anandapur, West Bengal.[1]