Louis William "Bridgie" Webber (1877 – July 30, 1936) was an underworld figure in New York City and a former associate of gang leader Monk Eastman who later testified against police lieutenant Charles Becker during his murder trial in 1912.
Brought into custody by a police detective two days following Rosenthal's murder, Webber claimed he had been at his clubhouse during the night.
Although he was held in custody, his testimony against Becker and members of the Lenox Avenue Gang helped convict the five men who were sentenced to death.
Shortly after his return to the city, Webber was stabbed by an unidentified youth on July 14, 1913 and fled New York.
He became a successful manufacturer in Passaic, New Jersey for a number of years and later served as vice president and secretary of the Garfield Paper Box Company.