Johan Emanuel Wikström was a Swedish botanist.
He studied law and medicine at the University of Uppsala and obtained his medical doctorate in 1817. He worked closely with Olof Swartz at the Bergianska trädgården, where in 1818 he succeeded Swartz as garden superintendent. In 1823 he attained the title of professor. From 1821 onward, he taught natural history classes at the gymnasium in Stockholm.
From 1822 to 1855 he published Öfversigt af botaniska arbeten och upptäckter för åren 1820-51, being issued in 32 volumes. The botanical genus Wikstroemia was named in his honor by Stephan Endlicher.