Johann Jacob Roemer (8 January 1763, Zürich – 15 January 1819) was a Swiss physician and professor of botany in Zürich, Switzerland. He was also an entomologist.
With Austrian botanist Joseph August Schultes, he published the 16th edition of Carl Linnaeus' "Systema Vegetabilium".
Roemer's "Genera insectorum" is a most attractive Swiss publication on entomology. The splendid hand-coloured plates were drawn and engraved by the Swiss artist J.R. Schellenberg, an entomologist himself and therefore familiar with structural details.
In 1793, he was elected a foreign member of the Royal Swedish Academy of Sciences. The botanical genus "Roemeria" from the family Papaveraceae is named after him.
Works.
 ;templatestyles src="Botanist/styles.css"/ ;The standard author abbreviation Roem. is used to indicate this person as the author when citing a botanical name.
References.
 ;templatestyles src="Reflist/styles.css" / ;