Clarence Todd may refer to:

• Clarence King (1842–1901), American geologist, mountaineer, and author, who also went by Clarence Todd
• Clarence Todd (tennis) (1892–1973), Australian tennis player

• Hollandia Airfield Complex
• Hollandia Hoorn
• Hollandia Hut
• Hollandia (moth)
• Hollandia operation
• Hollandia Produce
• Hollandia Victoria Combinatie
• Holland, In
• Holland interest survey
• Holland Island
• Holland Island, Maryland
• Holland, Josiah Gilbert
• Holland Ladies Tour
• Holland Library
• Holland, Ma
• Holland-Mark
• Holland Marsh Lake
• Holland, Mass
• Holland Medical High School
• Holland, Minneapolis, Minnesota
• Holland Museum
• Holland national rugby union team
• Holland Neutraal
• Holland, North Carolina
• Holland of Warwick