Johann Heinrich Linck the Younger (5 January 1735 – 23 May 1807) was a German pharmacist, naturalist and collector.
Linck was born a month after the death of his father Johann Heinrich Linck and was raised by his mother Maria Elisabeth née Döring who also managed the family-owned pharmacy Zum Goldenen Löwen in Leipzig.
Linck took over management of the pharmacy in 1757 and also began to systematically examine the collections of the natural history cabinet.
One of the visitors was the Saxon Elector Friedrich August III then aged seventeen.
Linck began to document the collections from 1783 to 1787 in three volumes of the Index Musaei Linckiani.