The Budd BB-1 Pioneer was an experimental United States flying boat of the 1930s utilizing the Savoia-Marchetti S.56 design.

[1] By 1930 the Budd Company was a national leader in construction of railway vehicles containing considerable amounts of stainless steel.

Anxious to expand this expertise into other areas, company founder Edward G. Budd hired Enea Bossi to design and construct a flying boat of shot-welded stainless steel sheet and strip.

The prototype BB-1 first flew from the Budd Factory airfield, a field northwest of Philadelphia (Latitude 40.11/West Longitude 75.04).

In 1935 its fabric and lower wing were removed, and it was placed on permanent display outside the Franklin Institute in Philadelphia, Pennsylvania.