Bradford Hebrew Congregation is on the verge of closure through lack of numbers.
The Orthodox synagogue opened in 1906 and enjoyed a membership peak in the 1950s.
However, as Jewish families left the area, membership declined to 86 in 1999. Today there are just 17 men.
Synagogue chairman Albert Waxman acknowledged the possibility of closure.
"We are very short of people. We are not selling the synagogue. The laws of our congregation are that we have to call an EGM to get the okay to sell. We have a very long history but we have now no children in the community. They have moved to Leeds, Manchester and London.
"Our building holds around 200 people but we only have a service once a month. We have about five members who attend and we are supported by non-members." Its closure would leave a local Reform congregation, whose 35 members have managed to keep it going with outside financial support.