Hugo Albert Tullgren (7 September 1874, in Stockholm – 1 July 1958) was a Swedish entomologist and arachnologist. In 1899 he received his bachelor's degree from Uppsala University, then from 1902 worked as an assistant at the National Entomological Institute. From 1907 he was associated with the entomology department of the Centralanstalten för försöksväsendet på jordbruksområdet (Central Institute for Experimental Agriculture), of which, he became a professor in 1913.