Boldizsár Kiss (born April 8, 1985) is a Hungarian former swimmer, who specialized in freestyle and butterfly events.
He won a silver medal in the 200 m butterfly at the 2003 European Junior Swimming Championships in Glasgow, Scotland.
Kiss is a member of the swimming team for Syracuse Orange, and a graduate of information management and technology at Syracuse University in New York.
Kiss qualified for the men's 400 m freestyle at the 2004 Summer Olympics in Athens, by eclipsing a FINA B-standard entry time of 3:57.86 from the national championships in Székesfehérvár.
He challenged seven other swimmers on the third heat, where South Korea's Park Tae-Hwan was disqualified for a false start.
He rounded out the field to last place by more than three seconds behind Brazil's Bruno Bonfim in 4:02.87.
Kiss failed to advance into the final, as he placed thirty-eighth overall on the first day of preliminaries.