From Alfred Hitchcock Wiki

The following locations were used in To Catch a Thief (1955)...

• Saint-Jeannet - location of Robie's villa
• Le Bar sur Loup - one of the villages shown in the car chase scene
• Tourrettes sur Loup - one of the villages shown in the car chase scene
• Hotel Carlton, Cannes
• Boulevard Jean Jaurès, Cannes - location of the flower market scene
• Boulevard Leader, Cannes - location of the "Sanford Villa"
• Èze - the bridge near the village is shown
• Promenade des Anglais, Nice
• Avenue Foch, Nice - location of the police station
• Avenue de la Victoire, La Turbie
• Lighttower, Cannes
• Cagnes sur Mer - location of the old cemetery