Otus

Otus may refer to:


 * Otus (education), a K-12 educational technology company
 * HMS Otus, two ships in the Royal Navy
 * Otus (bird), genus of owls
 * Otus (mythology), giant in Greek mythology, brother of Ephialtes, one of Aloadae
 * Otus of Cyllene, hero in Greek mythology, killed by Hector in Trojan War
 * USS Otus (ARG-20) (1940–1946), an internal combustion engine repair ship
 * "Otus the Head Cat", weekly column in the Arkansas Democrat-Gazette by Michael Storey
 * Otus (lens), high-performance lens series by Carl Zeiss AG
 * Tonmi Lillman or Otus (1973–2012), member of a band Lordi
 * "Of the United States" as in POTUS (President of the United States), FLOTUS (First Lady of the United States), and SCOTUS (Supreme Court of the United States)
 * Moto E (2nd generation) 3G, a Motorola Android smartphone, codename otus
 * Otus, a playable character from the 2016 Video Game Owlboy from D-Pad Studio
 * Operational taxonomic unit, operational taxonomic units in biology

People with the surname

 * Erol Otus (21st century), American artist