Casaletto may refer to the following communes in Italy:

• Casaletto Ceredano, in the province of Cremona
• Casaletto di Sopra, in the province of Cremona
• Casaletto Lodigiano, in the province of Lodi
• Casaletto Spartano, in the province of Salerno
• Casaletto Vaprio, in the province of Cremona

• Gardiner
• Gardiner Dam
• Gardiner Expressway
• Gardiner Expressway (Toronto)
• Gardiner, Maine
• Gardiner, ME
• Gardiner, Montana
• Gardiner, MT
• Gardiner railway station
• Gardiners Bay
• Gardiners Island
• Gardiner's Island
• Gardiz
• Gardlosa
• Gardman
• Gardner
• Gardner Ackley
• Gardner (crater)
• Gardner Dozois
• Gardnerella vaginalis
• Gardner Fox
• Gardner gun
• Gardnerian Wicca
• Gardner, IL
• Gardner, Illinois