AJ McLean
In a statement of his own, the Backstreet Boys singer—who served as a judge alongside Liam in the upcoming Netflix series Building the Band—said, "Words cannot begin to express the pain I have for this man and the great loss we have endured!"
"We became very close almost immediately and shared so many stories, laughs, and life experiences," he continued. "Gone too soon my friend. You were such a light an incredible person to be in the presence of daily while we worked together!"
AJ added, "I cannot believe you are gone. Keep shining and keep singing for us all to hear. My deepest condolences to your family , loved ones, and your bandmates. Love you bro."
Charlie Puth
In a post shared on his Instagram Story, the "See You Again" singer said Liam was "always so kind to me."
"He was one of the first major artists I got to work with," Charlie, who worked with the One Direction alum on 2017's "Bedroom Floor," continued. "I can not believe he is gone."
Olly Murs
"This news is devastating, am lost for words," the X Factor runner-up wrote on Instagram. "We always had a good laugh when we saw each other, sometimes the catch ups were only short and sweet but when we did it was mostly about how annoyingly good his hair always looked, or our love for Becks, the old XF days and the tour we shared together."
The musician continued, "Liam shared the same passions as me, the same dreams so to see his life now end so young hits hard, I’m truly gutted and devastated for his Family and of course his son Bear losing a dad x am thinking of them! RIP Liam."
Halsey
The "Without Me" singer shared a lengthy Tumblr post to commemorate the late One Direction member.
"I loved one direction with an all-consuming force when i was younger—it hurts deeply to mourn someone you were a massive fan of as teenager, and became a peer of as an adult," she wrote. "I know people change and grief is unsure or complicated when it’s attached to a fond memory or the feeling a person gave you and not tangibly the person themself. I can see many of you on here are struggling with that right now and i understand."
And Halsey finished by sharing a fond memory of Liam.
"A few years ago i purchased a home that Liam previously owned," she continued. "There were rumors the house was haunted. He assured me it was not, and i believed him. because i know the ghosts that haunt us aren’t tethered to buildings. They live in parts of us that are harder to reach and they go wherever we do. As a parent, a fellow artist, and a fan, I simply cannot fathom this untimely loss. my heart goes out to his family, friends, and the fans."
Paul Wesley
"I am deeply saddened by the loss of my friend Liam," the Vampire Diaries alum wrote on Instagram Story. "Such a tragedy. Far too young."
Quavo
The rapper, who was featured on Liam's biggest solo hit "Strip that Down" wrote in an Oct. 16 Instagram Story tribute, "Rest in Paradise."
Dan Richards
"This all feels so surreal," the guitar player—who toured with One Direction—wrote in an Oct. 16 Instagram Story. "Thanks to everyone reaching out, still trying to wrap my head around it all. My thoughts go out to Liam's family at this time."
Ronnie Wood
The Rolling Stones member, who performed with One Direction on The X Factor UK in 2014, shared his condolences online.
"I am shocked and saddened to hear of the death of Liam Payne," Ronnie wrote in an X, formerly Twitter, statement. "It was a pleasure to work with him on our X Factor performance. God bless Liam, thinking of all his loved ones. He will be dearly missed."
The X Factor
"We are heartbroken by the sad passing of Liam Payne," the show—which Liam was apart of for two seasons in 2008 as a solo artist and with One Direction in 2010—wrote in a statement on X, formerly Twitter. "He was immensely talented and, as part of One Direction, Liam will leave a lasting legacy on the music industry and fans around the world. Our thoughts are with his friends, family and all who loved him."
Cher Lloyd
The "Want U Back" singer, who competed alongside One Direction on The X Factor in 2010, wrote a heartfelt message to the late member on Instagram, alongside a throwback photo of the pair.
"From being on the show together, visiting each others homes while filming, going on tour together and watching you achieve your dreams," Cher wrote on Instagram Oct. 17. "I’ll cherish the memories made and the laughs we had. My thoughts are with your family and friends, with everyone who loves you. My heart is breaking for your Son Bear. Rest in peace Liam."
Josh Devine
The drummer, who toured with One Direction, shared a heartfelt tribute to social media.
"Heartbreaking news," he wrote in an Oct. 17 Instagram Story. "I just pray for Liam's family, and all that knew and loved him. Some of my fav memories in life were because of this man. No words."
J Balvin
Liam's "Familiar" duet partner wrote on his Instagram Story, "Rest in peace my g."
Helen Hørlyck
The vocal coach, who worked with One Direction throughout their five-year run, shared a vulnerable post for Liam.
"Liam was the loveliest young man who just loved to sing," she wrote in a Oct. 17 Instagram post. "He was only a teenager when I met him and One Direction was formed. His talent and professionalism had a big impact on the band especially in the early days as Liam always strived for the best during all of our sessions. Liam was fun and a joy to spend time with, he even re named some of my vocal exercises as he had such a wonderful sense of humour and upbeat energy."
She continued, "I will always remember Liam as a polite young man who was caring and kind."
And the vocal coach finished by sharing a story of the late boyband member.
"Whenever my son Cai would join the world tours Liam would invite him along on his tourbus, sit and play video games with him, make sure he was OK, such a person was Liam, warm and friendly," she added. "Thank you for all the wonderful years dear Liam, you will forever be in my heart and your voice will live on, not only in my memories but also in the incredible songs. Rest in peace sweet darling."
Rebecca Ferguson
The former X Factor contestant, who competed alongside One Direction in 2010, wrote a lengthy X post memorializing Liam and speaking out against fame.
"I've spoken for years about the exploitation and profiteering of young stars and the effects—many of us are still living with the aftermath and the PTSD," she wrote. "Rest in peace Liam, I hope you find peace on the other side, and love to your mum and family."
Greg Horan
Niall Horan's older brother wrote a lengthy tribute to the One Direction member in an Instagram post.
"To say I’m heartbroken is an understatement," Greg wrote in an Oct. 17 post. "A weird feeling this morning and all night you were a top young boy to a man a son a brother you are only one of 4 lads I was happy enough to take my place in nialls life as a brother you will be forever missed Liam."
He continued with a note on the blended family between the five members of One Direction.
"My heart goes out to your family, parents and sisters and your son Bear and your 1D brothers," he continued. "10th October we met and we started out that evening as 5 families into one big one 1D family thank you for all the laughs bro watch down on the all your family and mind them lots of love kiddo."
Waliyha Malik, Safaa Malik & Doniya Malik
Zayn Malik's three sisters paid tribute to the late One Direction member in their respective Instagram stories, each calling his death "heartbreaking," and following up with photos of Liam with their brother.
"I have no words," Waliyha, who appeared in the "Story of My Life" music video, wrote in an Instagram Story. "Literally heartbroken. RIP."
Noah Cyrus
As an avid fan of One Direction, Noah wrote a tribute to the late member in a heartfelt Instagram Story.
"I'm not ever going to be able to fully voice how I am feeling," Noah wrote. "But I feel so fortunate to have been in the same generation as Liam Payne and the pheneomenon of 1D. Liam you are so loved and will always be loved by so many."
The "I Burned LA Down" singer continued with a note on how much One Direction meant to her, and sent condolences to Liam's family and friends, as well as other fans.
"Rest in peace Liam," she finished. "I really wish you so much peace beyond this world. You deserve it."
Anne Twist
Harry Styles' mom shared an emoji of a broke heart, writing in the caption on Instagram, "Just a boy..."
Bazzi
"Man what," the songwriter wrote on X. "RIP LIAM PAYNE."
Ashley Iaconetti
"This is heartbreaking,” the Bachelor in Paradise alum wrote on her Instagram Story, sharing a photo of herself with Liam. "He had one of my favorite boy band voices. I’ll always remember when my friend was turning me into a One Direction fan in grad school and she showed me their performance of ‘Gotta Be You’ on the X Factor."
she continued, "The first verse he sang converted me into a fan instantly. I had chills. My heart goes out to his family and friends."
Zedd
"RIP Liam," the DJ shared on X. "Can’t believe this is real… absolutely heartbreaking."
Mabel
"FOR SO MANY YEARS I ALWAYS KNEW I COULD CALL YOU FOR SUPPORT AND BIG BROTHERLY ADVICE BUT NOW YOU'RE GONE...," the English singer wrote on her Instagram Story. "MY THOUGHTS AND PRAYERS ARE WITH LIAMS FAMILY AND FRIENDS DURING THIS TIME YOU'LL BE SO MISSED."
Ty Dolla $ign
"Just talked to you 2 days ago my guy," the rapper wrote on his Instagram Story. "Ima miss u fr fr sucio."
Paris Hilton
"So upsetting to hear the news of @LiamPayne passing," the Simple Life star wrote on X, formerly Twitter. "Sending love and condolences to his family & loved ones. RIP my friend."