Joseph Robert Loscalzo (July 18, 1910 – October 19, 1955), known professionally as Midget Wolgast, was a world flyweight boxing champion.

Wolgast turned pro in 1925 and was considered one of the fastest boxers of all time.

In 1930, he defeated Black Bill for the vacant New York State Athletic Commission world flyweight title.

The Ring Magazine founder Nat Fleischer, Statistical boxing website BoxRec, and the International Boxing Research Organization all rate Wolgast as the 8th greatest flyweight of all-time.

[4] Wolgast fought future NYSAC Bantamweight Champion Tony Marino for the first time on June 6, 1932, at the Myers Bowl in North Braddock, Pennsylvania, winning in a ten-round points decision.