Vicky, the Bornean orangutan, was well known among zoo regulars for her distinctive toothy smile which brought joy to many visitors.
Tributes flooded in yesterday across social media on the announcement of her death.
Vicky was born at the zoo in June 1984 where she spent most of her life.
Darren Webster, zoo director at Blackpool Zoo, said: "She was a hugely popular member of our zoo family and was dearly loved by all of our visitors. Staff and keepers are extremely saddened at her passing and are being comforted by the kind messages of condolence we are receiving. Vicky, and her smile, will be missed by all."
Here are a selection of your messages
I have a video of Vicky 'brushing' my daughter's hair last year.
It was a lovely moment and this news is very sad for our household as the Orangutans are a favourite.
What a shame!
We really liked seeing her on our visit to the zoo!
Won't b the same without her smile xxx
Lizzie Lovestiananteegan Dutton
Devastated by this sad news loved seeing Vicky regularly at the zoo since I was a little girl and then bringing my own children she was a funny character n will be sadly missed.
So sad Vicky will be sadly missed RIP Beautiful.
Aw she had a lovely smile! Rip Vicky.
Aw what sad news loved seeing her when we visited the zoo.
A big loss to Blackpool zoo. She was the best.
I used to spend most of my time when I worked there at the ape house with Vicky and Sibu.
She was probably the biggest character of all the animals we had. Feel incredibly sad.
Aww she came to the glass and kissed my son and put her hand to his felt so sorry for her bless her rip x
Toni Louiza Phillips
At rest now after a long live giving the millions of spectators a lot of fun.
Rest in peace so glad I had the pleasure of meeting her.
What a sad loss too a great zoo x.
I loved Vicky. Many laughs with her and my girls. RIP VICKY X.
My daughter loved her when we went on her birthday so sad xx.
Aww no. Loved her xx.
Oh no.... I'm so sad.
So sorry will be sadly missed.
Sorry for ur loss loved seeing Vicky X.
She was beautiful. So sad.