Whatever keeps me awake in class.

HP
Barty Crouch Jr.: 5'10"
Mitch Hewer: 5'9"
Joe Anderson: 5'11"
(So Barty is the average of my two PBs of choice. Nice.)

Xeno Lovegood: 6'3"
Owen Wilson: 5'10.5"
(I find this truly hilarious and I have NO IDEA WHY.)

Caradoc Dearborn: 6'2"
Matthew Gray Gubler: 6'1"
James Marsden: 5'10"

Theodore Nott: 5'11"
Shaun Haugh: 6'1"

Jason Dorny: 6'4"
Cillian Murphy: 5'9"

Hermione Granger: 5'6"
PB to be determined, but Emma Watson stands at 5'6" also.

Daphne Greengrass: 5'6"
Kirsten Dunst: 5'6"

ORIGINAL CHARACTERS
Emerson Arden: 5'9"
Eddie Redmayne: 5'11"

Isaiah Fitsgerald: 5'7"
Tom Schilling: ...apparently, IMDB has no idea.

Jeremy Garrett: 5'5"
Jackson Rathbone: 5'9.5" (which is about as tall as Jeremy is EVER going to get. If he wears modest heels.)

Josiah Quinn: 5'11"
Aaron Gilmore: I HAVE NO IDEA BECAUSE NO ONE ACTUALLY KNOWS WHO HE IS. He's a gorgeous goth model, though. I can say that much.

Dylan McKellar: 6'3"
RPattz: 6'1"

Davin Andrews: 6'4"
Matthew Gray Gubler: 6'1"

Mitchell Andrews: 6'1"
Hugh Laurie: 6'2.5"

Andy Beckett: 5'9"
Chris Colfer: 5'7.5"

Jason Blackwood: 6'2"
Neil Patrick Harris: 6'1"

JoAnn Kaczkowski: 5'8"
Sara Rue: 5'7"

Rory Mitchell: 6'2"
Orlando Bloom: 5'10.5" (REALLY? I thought he was a lot taller than that.)

Bobby Morrell: 5'8"
Ryan Gosling: 6'1"

Alice Ridley: 5'9"
Olivia Thirlby: 5'4"

Ashleigh Roberts: 6'1"
Jesse Spencer: 5'10.5"

OTHER
Clytemnestra: 5'5"
Shara Worden: Nooooo idea, but she's not that tall, apparently.