Jan Jacob Kieft (25 Jenụwarị 1877, Amsterdam <unk> 2 Eprel 1946, Rotterdam), bụ onye na-eme egwuregwu Dutch nke so na asọmpi Olympic nke 1908. Kieft so n'òtù ndị Netherlands na-eme egwuregwu mmega ahụ, bụ nke bịara nke asaa n'asọmpi ndị otu
Ọ dị mma. N'asọmpi nke onye ọ bụla, ọ bịara 74th.