The Maghain Aboth Synagogue is a synagogue in Singapore. It is located at 24/26 Waterloo Street in Rochor, within the Central Area at Singapore's central business district. Constructed in 1878, it is the oldest and largest Jewish synagogue in Southeast Asia and the second largest in Asia itself, outside of Israel.

Jews have a long history in Singapore, dating back to the 19th century, and are currently a significant minority population in the country.