Alexander Rollett (14 July 1834 – 1 October 1903) was an Austrian physiologist and histologist born in Baden bei Wien, Niederösterreich.
He studied with Ernst Wilhelm von Brücke (1819–1892) in Vienna, and in 1863 became a professor of physiology and histology at the University in Graz.
He was a prime factor in making Graz an international center for physiological training and education.
He was the author of numerous scientific papers on gastric glands, connective tissue, blood cells, tendons, nerves, etc.
[1] His name is associated with "Rollett's stroma", being defined as an insoluble, spongy network forming the framework of a red blood cell.