See also: saito and Saitō English Etymology Borrowed from Japanese 斎藤 (Saitō). Proper noun Saito (plural Saitos) A surname from Japanese. Statistics According to the 2010 United States Census, Saito is the 7613rd most common surname in the United States, belonging to 4367 individuals. Saito is most common among Asian/Pacific Islander (66.41%) and Hispanic/Latino (16.67%) individuals. Anagrams Ostia, ostia, TOISA, Toias, stoai, IOTAs, taosi, Oatis, iotas, staio French Etymology Borrowed from Japanese 斎藤 (Saitō). Pronunciation IPA(key): /sa.i.to/ Proper noun Saito m or f a surname from Japanese Tagalog Etymology Borrowed from Japanese 斎藤 (Saitō). Pronunciation (Standard Tagalog) IPA(key): /ˈsajto/ [ˈsaɪ̯.t̪o] Rhymes: -ajto Syllabification: Sai‧to Proper noun Saito (Baybayin spelling ᜐᜌ᜔ᜆᜓ) a surname from JapaneseWikiwand - on Seamless Wikipedia browsing. On steroids.