Deputies responded to reports of a stabbing on Main Street outside the I.D.E.S. Hall at about 11:20 p.m., according to the sheriff's office.
Four men in their 20s were leaving a wedding reception at the hall when they were approached and stabbed by two suspects.
The four victims were taken to a hospital with serious injuries, and all are expected to survive, according to the sheriff's office.
One suspect was described as a Hispanic man between 18 and 20 years old and about 5 feet 6 inches tall. He had a chubby face, light skin and a short crew cut style haircut.
The second suspect was described as a Hispanic man in his early 20s around 5 feet 11 inches tall and weighing 150 pounds. Witnesses told investigators that he had black curly hair and a long "droopy" face.
Anyone who might have information about the case is asked to contact the San Mateo County Sheriff's Office at (650) 363-4363.