Sergio Bello (born 6 May 1942) is an Italian former sprinter, third with the 4x400 metres relay at the 1971 European Athletics Championships.

He was born in Intra.

Bello has 45 caps in Italy national athletics team (from 1961 to 1972).

[1] In his career, he participated in three editions of the Olympic Games and won the Italian Athletics Championships 6 times.