Polaca may refer to:

• Polača, two villages in Croatia
• Polacca, 17th-century sailing vessel

• Donnelly Township, Marshall County, Minnesota
• Donnelly Township, Marshall County, MN
• Donnelly Township, Minnesota
• Donnelly Township, MN
• Donnelly Township, Stevens County, Minnesota
• Donnelly Township, Stevens County, MN
• Donneloye
• Don Nelson
• Donnelsville
• Donnelsville, OH
• Donnelsville, Ohio
• Donner
• Donner Camp
• Donner (crater)
• Donner family
• Donner Lake
• Donner Memorial State Park
• Donner party
• Donner Party
• Donner Pass
• Donnersbergkreis
• Don Newcombe
• Don Newkirk
• Don Newman (broadcaster)
• Don Newton