Sanaullah, also spelled Thanaullah (Arabic: ثناء اللہ) is a male Muslim given name and surname, meaning praise of God. Notable people with the name include:

• Qadi Thanaullah Panipati (died 1810), Early modern Northwestern Indian Islamic scholar
• Sanaullah Khan Niazi (born 1960), Pakistan Army general
• Sanaullah Baloch, Pakistani politician
• Rana Sanaullah Khan (born 1955), Pakistani lawyer