Marc van Belkum, a Dutch water polo player, died on February 11, 2026, at the age of 61.
Born in Leiden in 1965, he competed for the Netherlands at the 1992 Summer Olympics in Barcelona, where the team finished ninth. Van Belkum began his water polo career with De Zijl-LGB in Leiden and later played for Nereus and Vivax, with a spell in Italy.
He came from a prominent water polo family; his brother, Stan van Belkum, competed at the 1980 and 1984 Summer Olympics, and his niece, Iefke van Belkum, represented the Netherlands at the 2008 Summer Olympics.
Marc van Belkum (27 January 1965 – 11 February 2026) was a Dutch water polo player, who finished in ninth position with the Dutch team at the 1992 Summer Olympics in Barcelona.