Baruch Schleisinger Weil, born Baruch Schleisinger, also known as Benjamin S. Weil, (June 29, 1802 – March 28, 1893) was a French American immigrant, farmer, real estate broker, and politician.

In 1843, he emigranted to the United States, settling first in New York City and then in New Orleans.

Since the nearest Jewish community was in Milwaukee, he arranged for teachers to come the roughly 35 miles by ox team to instruct his children.

Weil served in the Wisconsin Militia as a brigadier general.

Weil died in Chicago, Illinois, on March 28, 1893,[2][3] and is buried at Greenwood Cemetery in Milwaukee.