As news of his death spread, celebrities and fans alike took to social media to pay tribute to Rickman, whose expansive credits included memorable and often villainous characters on both the stage and screen.
J.K. Rowling tweeted that he was a "magnificent actor and a wonderful man."
There are no words to express how shocked and devastated I am to hear of Alan Rickman's death. He was a magnificent actor & a wonderful man.— J.K. Rowling (@jk_rowling) January 14, 2016
My thoughts are with Rima and the rest of Alan's family. We have all lost a great talent. They have lost part of their hearts.— J.K. Rowling (@jk_rowling) January 14, 2016
Daniel Radcliffe reflected about Rickman on Google Plus, saying, "People create perceptions of actors based on the parts they played so it might surprise some people to learn that contrary to some of the sterner(or downright scary) characters he played, Alan was extremely kind, generous, self-deprecating and funny."
The word "Always," Snape's most famous line, began trending as fans of the Harry Potter franchise expressed their grief.
Even companies honored the actor, such as Tumblr's solemn reference to a death scene in the series.
Rest in peace, Alan Rickman. Wands in the air. pic.twitter.com/rOcockzYPW— Tumblr (@tumblr) January 14, 2016
Some alluded to the death of David Bowie Sunday night, who also died at age 69 of cancer.
Ahh man no more sudden losses of beloved Brit artists, I can only handle so much 😫. Alan Rickman, you were THE MAN. What a great career! RIP— Darren Criss (@DarrenCriss) January 14, 2016
It seems like the Universe is recalling geniuses this week. RIP Alan Rickman.— Laura Benanti (@LauraBenanti) January 14, 2016
I HATE CANCER— Debra Messing (@DebraMessing) January 14, 2016
Here are highlights of what celebrities are saying about the actor's death.
Shocked & sad to hear Alan Rickman has passed away. One of the nicest actors I've ever met.Thoughts and prayers with his family at this time— James Phelps (@James_Phelps) January 14, 2016
Terribly sad news about the passing of Alan Rickman. A funny and engaging person who put a shy young actor at ease when I was on HP.— Oliver Phelps (@OliverPhelps) January 14, 2016
"I was at Leavesden Studios today when I heard the news. As I walked through the canteen I thought of Alan queuing up for his lunch with us mere mortals. I recalled the trailer in which he offered me some of the greatest advice I ever received about this mad profession we shared. Being back in those corridors made me remember a lot of things and I will treasure those memories all my life. He inspired my career more than he ever knew and I'll miss him."
Sad to learn of the passing of Alan. Snape was a deliciously acted character that I loved to hate. #bygraptharshammer— William Shatner (@WilliamShatner) January 14, 2016
I do not want my heroes to die! Alan Rickman is dead & he was another hero. Alan - thank you for being with us. We are sorry you had to go— Eddie Izzard (@eddieizzard) January 14, 2016
Oscar noms out. Couldn't care as Alan Rickman is gone & could have done every job on those movies as well, women included. Stunning talent.— Jamie Lee Curtis (@jamieleecurtis) January 14, 2016
Devastated to hear about the passing of Alan Rickman. I had the pleasure of working with him on my first movie. A true legend and gentleman.— Jamie Campbell Bower (@Jamiebower) January 14, 2016
Some actors you work with you will never forget. RIP The wonderful Alan Rickman xo pic.twitter.com/kIAVjA6HBY— Kim Cattrall (@KimCattrall) January 14, 2016
So sad to hear that we’ve lost Alan Rickman. What a brilliantly talented man. Countless amazing performances. What a sad week.— Tom Fletcher (@tommcfly) January 14, 2016
Actors are agents of change. A film, a piece of theatre, a piece of music, or a book can make a difference. -- Alan Rickman— Emmy Rossum (@emmyrossum) January 14, 2016
What desperately sad news about Alan Rickman. A man of such talent, wicked charm & stunning screen & stage presence. He'll be sorely missed— Stephen Fry (@stephenfry) January 14, 2016
Long Live Snape. And Hans Gruber. And Sheriff of Nottingham. #saddestweek— taran killam (@TaranKillam) January 14, 2016
"If people want to know who I am, it is all in the work"- what magnificent work it is. Sorry and sad to hear about Alan Rickman's passing.— Sharon Rooney (@sharonrooney) January 14, 2016