Juan Manuel Bajo Ulloa is a Spanish film director.

The Golden Shell is the highest prize given to a competing film at the San Sebastián Film Festival. It was introduced in 1957. In 1953 and 1954, the highest prize had been called the Gran Premio. In 1955 and 1956 it was replaced by the Silver Shell. Six directors have won the Golden Shell twice: American director Francis Ford Coppola, Spanish director Manuel Gutiérrez Aragón, Mexican director Arturo Ripstein, Spanish director Imanol Uribe, Iranian director Bahman Ghobadi, and Spanish director Isaki Lacuesta.