Gerrit Jan Arnold Jannink (1 December 1904 in Enschede – 7 March 1975 in Ross-on-Wye, Great Britain) was a Dutch field hockey player who competed in the 1928 Summer Olympics.

Olympic medal record
Men's field hockey
Silver medal – second place 1928 Amsterdam Team competition

He was a member of the Dutch field hockey team, which won the silver medal. He played all four matches as forward and scored two goals.

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