Greater Hungary can refer to:

• Kingdom of Hungary before 1920, informally also known as "Greater Hungary" or "Whole Hungary" in the amateur popular literature. Academic historians call it as "Historic Hungary".
• Greater Hungary (irredentism), the full or partial territorial restoration of the Kingdom of Hungary, an official political goal of the Hungarian state between the two World Wars; the restoration of the unity of the territories of Kingdom of Hungary, the political goal of small marginalized groups today