Films/H

Ha

 * Harry Potter: Mini-giantesses like Olympe Maxime exist in the series.

He

 * Heaven's Lost Property the Movie: The Angeloid of Clockwork: At the beginning of the movie, a giant chicken rampages the town and Sohara transforms into a giantess.

Ho

 * Honey, I Blew Up The Kid: To calm the giant child, Diane Szalinski (his mother), receives a ray that makes her grow. She, as a giantess, goes to where the giant kid is and calms him, to finally return to their respective normal sizes.