The "Harry Potter" and "Die Hard" actor died at the age of 69, his rep confirmed to ABC News.
One of film and theater's most admired actors, the British thespian was known for his range. With his signature nasal baritone, he could play warm and soothing in one role, and convey villainous menace in the next.
Rickman got his star in theater. His big break came playing the male lead, the Vicomte de Valmont, in the 1985 Royal Shakespeare Company's production of "Les Liaisons Dangereuses," first in London and then on Broadway. He received both Tony Award and Drama Desk Award nominations for his performance.
On the big screen, he was best known for playing villain Hans Gruber in "Die Hard" and Severus Snape in the "Harry Potter" franchise. But Rickman starred in dozens of films throughout his career.
Here are some of his most beloved roles:
'Robin Hood: Prince of Thieves'
'Truly, Madly, Deeply'
'Sense and Sensibility'
'Rasputin: Dark Servant of Destiny'
On the small screen, Rickman played Grigori Rasputin in the 1996 TV movie "Rasputin: Dark Servant of Destiny," winning a Golden Globe, an Emmy and a Screen Actors Guild Award.
'The Winter Guest'
Rickman's profile rose as the ambiguous Severus Snape, the potions master in the "Harry Potter" series. Starting in 2001, Rickman would appear in all eight films as Snape, a role he said in numerous interviews that he cherished as one of his favorites.
Rickman starred opposite Thompson again, this time as her foolhardy husband Harry, in the 2003 ensemble romantic comedy "Love Actually."
'Sweeney Todd: The Demon Barber of Fleet Street'
'A Little Chaos'
Rickman collaborated once again with Winslet, this time directing her in the 2014 period drama "A Little Chaos," in which he also played King Louis XIV.