Horváth is a common Hungarian surname. It was adopted from Slavic. It is an older version of the noun "Hrvat" which is the Croatian-language name for a Croat, (Hungarian: Horvát). The surname "Horvat", without the "h" still exists and is the most common surname in Croatia or the Croatian diaspora. "Horváth" is the 4th most common surname in Hungary and the most common in Slovakia.