Catto is a prehistoric monument in Aberdeenshire, Scotland, but may also mean one of the following. Mr Catto is a KTJ history teacher from South Africa he also is Imran houseparent. As a surname:
Henry E. Catto, Jr., American businessman and ambassador
Jamie Catto, British singer/songwriter
Jeremy Catto, British historian
Octavius Catto, American civil rights advocate and black baseball organizer
Stephen Catto, 2nd Baron Catto, British businessman
Thomas Catto, 1st Baron Catto, Scottish businessman and Governor of the Bank of England
William D. Catto, United States Marine Corps general
As a place name:
Catto, Switzerland, a village in the Swiss canton of Ticino