| Julien Day School | |
| Motto: | Knowledge is Power (Ludes Viriliter) |
| Address: | 35-E, Elgin Road, Rabindra Sadan |
| City: | Kolkata |
| State: | West Bengal |
| Postalcode: | 700020. |
| Country: | India |
| Established: | 1969 |
| Founder: | Late Mrs. Grace Julien |
| Type: | Anglo-Indian Christian Minority Institution |
| Oversight: | Julien Educational Trust |
| Principal: | Dr. Siddhartha Dey (Kolkata), Mr Bobby Baxter (Ganganagar), (Kalyani), Mrs. Maryann Thorpe Smith (Howrah), |
| Grades: | Nursery to Class 12 |
| Campuses: | 4 Branches: Kolkata, Ganganagar, Kalyani, Howrah, |
| Nickname: | Julienites |
Julien Day School (JDS) is a co-educational primary, secondary and senior secondary school based in Kolkata, West Bengal, India and its outskirts. It is run by The Julien Educational Trust, and operates four branches in Kolkata (Elgin Road), Ganganagar, Kalyani and Howrah. The school was founded by Late Mrs. Grace Julien, and governed by the honourable Chairperson Mrs Sheila Broughton.
The Julien Day School was established at Kolkata in 1969,[1] Ganganagar in 1976, Kalyani in 1988 and Howrah in 2007 are all affiliated to the Council for the Indian School Certificate Examinations, New Delhi with I.C.S.E. at the class X level and I.S.C. at the class XII level comprising three streams viz. Science, Commerce, Humanities (Arts).
There are three major vacations during the year. The Summer Vacation in May–June, the Durga Puja Vacation in September–October and the Christmas Vacation in December–January.