Andreou

Andreou (Greek: Ανδρέου) is a Greek patronymic surname meaning "of Andreas" or "son of Andreas." It is formed from the given name Andreas, the Greek form of Andrew, with the genitive suffix -ou, a common pattern for Greek family names.

In Greek, the -ou genitive marks paternal or familial lineage, yielding surnames that identify a person as descended from a male ancestor named Andreas. This pattern is widely used in Greek naming practices, and many surnames follow this form beyond Andreou.

Andreou is most common in Greece and Cyprus and among Greek-speaking communities abroad. Through migration, it appears in countries with Greek diasporas, including Australia, Canada, the United States, and the United Kingdom.

Because it is transliterated from Greek, English-language spellings may vary. Andreou is the most common rendering, but other transliterations occasionally appear in non-Greek contexts depending on linguistic conventions.

Notable people bearing the surname have been active across fields such as politics, academia, and culture, particularly within Greece and Cyprus. The surname remains a recognizable marker of Greek heritage and patronymic naming traditions.