IA3 or similar may refer to:
* ''
Ice Age: Dawn of the Dinosaurs'', a 2009 3-D computer-animated adventure comedy film
*
Iowa Highway 3, a state highway that runs from east to west across the state of Iowa
*
Iowa's 3rd congressional district
Iowa's 3rd congressional district is a List of United States congressional districts, congressional district in the U.S. state of Iowa that covers its southwestern quadrant, which roughly consists of an area stretching from Des Moines, Iowa, Des ...
, a congressional district in the U.S. state of Iowa
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