Héctor Walter Giardino (born March 6, 1960) is an Argentine guitar virtuoso, composer and leader of the heavy metal and hard rock band Rata Blanca.
In 1981 Walter Giardino as a guitarist and vocalist founded Punto Rojo with Gustavo Andino (drums) and Roberto Cosseddu (bass). The band was successful on the under scene but never recorded an album. The band was dissolved in 1984. In 1985 the most important national heavy metal band at time V8 was looking for a new guitarist and drummer to substitute Osvaldo Civile and Gustavo Rowek as so the band recruited both Walter, Gustavo Andino (from Punto Rojo) and Miguel Roldan, another guitarist. In his time with V8 Walter wrote some songs but the band never accepted or incorporated them. After six months with V8, the bassist and leader Ricardo Iorio fired Walter. He then began a new project with another former V8 member, the drummer Gustavo Rowek.