Some of the finest actors in the world were recruited to play Hogwarts professors in the beloved "Harry Potter" movies. Many of them have had long acting careers dating back to when they were the same age as Harry, Ron and Hermione! Here's what your favorite Hogwarts professors looked like as young actors and actresses. 

Richard Harris - Albus Dumbledore
1. Richard Harris - Albus Dumbledore

The Irish actor played the beloved Headmaster in the first two movies, sadly passing away in 2002. 

Michael Gambon - Albus Dumbledore
2. Michael Gambon - Albus Dumbledore

The celebrated actor (who was inducted into the Order of the British Empire) took over the role for the remaining six films. 

David Bradley - Argus Filch
3. David Bradley - Argus Filch

The established stage actor also played Walder Frey in HBO's "Game of Thrones." 

Kenneth Branagh - Gilderoy Lockhart
4. Kenneth Branagh - Gilderoy Lockhart

A five time Oscar nominee, Sir Branagh has been romantically linked to two fellow "Potter" co-stars: Emma Thompson and Helena Bonham Carter! 

Brendan Gleeson - Mad Eye Moody
5. Brendan Gleeson - Mad Eye Moody

Gleeson is the real-life father of Domhnall Gleeson, who played Bill Weasley in the latter film adaptations. 

Zoë Wanamaker - Madam Hooch
6. Zoë Wanamaker - Madam Hooch

Though she only appeared in "Harry Potter and the Sorcerer's Stone," Wanamaker's turn as flying instructor Rolanda Hooch was a memorable one! She's a highly celebrated stage actress in both the U.S. and the U.K. 

Maggie Smith - Minerva McGonagall
7. Maggie Smith - Minerva McGonagall

Beloved to audiences everywhere, Smith was appointed Dame Commander of the Order of the British Empire in 1990.

Robbie Coltrane - Rubeus Hagrid
8. Robbie Coltrane - Rubeus Hagrid

Author J.K. Rowling reportedly had Coltrane at the top of her wish list for Hagrid from the very beginning — and it was indeed the perfect choice. 

Ian Hart - Quirinus Quirrell
9. Ian Hart - Quirinus Quirrell

Hart is best remembered for his role in "Sorcerer's Stone," but he also had a lead role on the short lived FX drama "Dirt" opposite "Friends" star Courteney Cox. 

Miriam Margolyes - Pomona Sprout
10. Miriam Margolyes - Pomona Sprout

A British-Australian actress, Margolyes has had a wide range of voice roles — but she's known to audiences all over the world as the lovable Herbology teacher. 

Warwick Davis - Filius Flitwick
11. Warwick Davis - Filius Flitwick

In addition to the Charms professor, Davis also played the goblin Griphook in the films. 

Imelda Staunton - Dolores Umbridge
12. Imelda Staunton - Dolores Umbridge

Who could forget Staunton's terrifying turn as the Headmistress from Hell? It's probably because Staunton is such a great actress — she was an Oscar nominee for the 2004 film "Vera Drake." 

Alan Rickman - Severus Snape
13. Alan Rickman - Severus Snape

One of the most iconic faces of the franchise, Rickman sadly passed away in January of 2016. Related: 20 Of The Best Alan Rickman Quotes (Both On And Off The Screen)

David Thewlis - Remus Lupin
14. David Thewlis - Remus Lupin

Playing the best Defense Against the Dark Arts teacher ever, Thewlis is also credited for movies such as "The Theory of Everything" and "James and the Giant Peach." 

Emma Thompson - Sybill Trelawney
15. Emma Thompson - Sybill Trelawney

Playing the wacky Divination professor, Thompson was married to Potter co-star Kenneth Branagh from 1989 to 1995! 

Jim Broadbent - Horace Slughorn
16. Jim Broadbent - Horace Slughorn

A celebrated actor, Broadbent won the Best Supporting Actor Oscar in 2001 for "Iris." 

Gemma Jones - Madam Poppy Pomfrey
17. Gemma Jones - Madam Poppy Pomfrey

The healer in the hospital wing was a small role in the films, but famous character actress Gemma Jones appeared in "Chamber of Secrets," "Half Blood Prince," and the second "Deathly Hallows." 

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