Delta

There is more than one place called Delta. The term Delta comes from the fourth letter of the Greek Alphabet which looks like a triangle and has thus come to be used for the mouth of certain rivers which have a triangular or near-triangular shape.

Canada

 * Delta (British Columbia) - an incorporated suburban city in the southern part of Greater Vancouver, on British Columbia's Lower Mainland.
 * Delta (Ontario) - a small unincorporated village in Rideau Lakes Township, north of Brockville in Ontario. There's an old mill and a maple syrup festival.

Nigeria

 * Delta (Nigeria) is a state in Nigeria.

United States of America

 * Delta (Arkansas) - a region in the state of Arkansas
 * Delta (Colorado) - a town in the state of Colorado
 * Delta (Iowa) - a town in the state of Iowa
 * Delta (Kentucky) - a town in the state of Kentucky
 * Delta (Louisiana) - a town in the state of Louisiana
 * Delta (Missouri) - a town in the state of Missouri
 * Delta (Ohio) - a town in the state of Ohio
 * Delta (Pennsylvania) - a town in the state of Pennsylvania
 * Delta (Utah) - a town in the state of Utah
 * Delta (Wisconsin) - a town in the state of Wisconsin