The Keneseth Eliyahoo Synagogue, also known as the Blue Synagogue, is an Orthodox Jewish congregation located at 55, Dr. V. B. Gandhi Marg in the Kala Ghoda neighborhood of Fort, Mumbai, Maharashtra. Completed in 1884, it is the second oldest Sephardic synagogue in Mumbai.

The synagogue was built by Jacob Elias Sassoon in memory of his father, Eliyahoo Sassoon.

The synagogue is known for its stunning blue and white facade and serves as a central place of worship for the Jewish community in Mumbai. It is situated close to notable landmarks such as the Taj Mahal Palace Hotel and Oberoi Trident, making it easily accessible for visitors.

The synagogue also hosts regular services and events, including Shabbat and holiday services, attracting both local and international visitors.