Simanga Shiba (born 5 December 1987) is an amateur boxer from Swaziland.

Shiba beat Cassius Chiyanika of Zambia and Patrick Barnes of Northern Ireland but lost to eventual winner Japhet Uutoni of Namibia in the 2006 Commonwealth Games semifinal.

At the 2007 World Championships, he missed his opening bout against Luis Yanez who won by walkover.

At the first Olympic qualifier for 2008, he lost to Suleiman Bilali but received a wildcard by the AIBA.

This biographical article related to a Swazi boxer is a stub.