Altus is a Latin adjective meaning "high, deep, noble or profound", surname of old Norman.
Alto is a musical term. Altus (voice type), is a voice type also known as countertenor.
Altus may refer to:
Altus, Arkansas, United States,
Altus, Oklahoma, United States,
Altus Skyscraper in Katowice, Silesia, Poland,
Altus (Mygdonia), a town in ancient Mygdonia,
Lee Altus (born 1966), Russian American guitarist,
A sub-brand owned by Arçelik A.Ş., a brand in Turkish household appliances industry