Albrecht Wilhelm Roth (6 January 1757 – 16 October 1834) was a physician and botanist born in Dötlingen, Germany.
He studied medicine at the Universities of Halle and Erlangen, where he received his doctorate in 1778. After graduation, he practiced medicine in Dötlingen, and shortly afterwards relocated to Bremen-Vegesack.
Roth is remembered for his influential scientific publications, particularly in the field of botany. His botanical research and writings came to the attention of Johann Wolfgang von Goethe (1749–1832), who recommended Roth to a position at the botanical institute at the University of Jena.
Two of his better written works were Tentamen florae germanica (a treatise on German flora), and Novae plantarum species praesertim Indiae orientalis (a book of Indian flora). The latter work is primarily based on botanical specimens collected by Moravian missionary Benjamin Heyne (1770–1819).
The botanical genus Rothia from the family Fabaceae is named after him.Anweisung für Anfänger Pflanzen zum Nutzen und Vergnügen zu sammlen und nach dem Linneischen System zu bestimmen, 1778.
Beyträge zur Botanik, 1782–1783
Tentamen florae germanicae, 1788–1800
Catalecta botanica (with Franz Carl Mertens), 1797–1806
Anweisung Pflanzen zum Nutzen und Vergnügen zu sammlen und nach dem Linneischen Systeme zu bestimmen, 1803.
Novae plantarum species praesertim Indiae orientalis, 1821.
Enumeratio plantarum phaenogamarum in Germania sponte nascentium, 1827
Manuale botanicum, 1830