Ioan Silviu Suciu (born 24 November 1977 in Sibiu) is a retired Romanian artistic gymnast.

One of his closest rivals was his teammate and pommel horse Olympic champion Marius Urzică, who was defeated by Suciu in Ljubljana, 2004, when the latter won the title while Urzică took 8th place.

Suciu is an Olympic bronze medalist with the team, a silver world medalist on pommel horse and a six-time European medalist (pommel horse, vault and team).

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