The height of Harley Quinn in comics isn't precisely standardized. It can range from around 5'6'' to 5'10''. Different artists might give her slightly different heights to fit their artistic style or the needs of the story.
Harley Quinn's height in the comics is somewhat flexible. Generally, she's shown to be around 5'8''. However, this can change based on the specific comic series or issue and the creative decisions of the team behind it.