An Adelaide father has chosen 100 guests for his birthday party next weekend after attracting a huge response to a post on social media about kids who have never received a party invitation.

Andrew 'Cosi' Costello hosts a local television program but admits that despite his public media profile he has never been one to make a big deal of his own birthday with a party.

"I love other people's birthdays but I never really have a party of my own. I don't really like the whole birthday party concept for myself," he said.

Cosi said he was moved when a mother spoke at a recent public function about her son's muscular dystrophy.

"She finished her chat by saying the hardest thing about having a child with special needs that she's found is ... when she goes to pick him up from school, all the other kids are running around with birthday party invitations and she said that never once has her son been invited to a birthday party throughout his whole life of schooling," he said.

"She said all she craved for is for one day her son to walk out of the classroom with a birthday invitation."

Cosi said his own family's fridge had a multitude of birthday party invites stuck on it at any time, prompting him to decide he would devote his own birthday, which is next weekend, to sharing a happy occasion with others, such as the mother who spoke at the public function.

"I decided to have my party especially for people like her son, invite 100 people to my birthday party — 100 people who have missed out on birthday parties or never been invited. I don't care for what reason or what age," he said.

Zoo offers party venue

A Facebook post attracted a huge response and Cosi said Adelaide Zoo had agreed to provide its rotunda as the party venue.

"The zoo's a cracking venue, we're going to have it under the rotunda, which is where my wife and I got married," he said.

"The people who are invited get to bring their families, so for 100 South Australian families it's a free day at the zoo. It should be really good."

Cosi wants to share some birthday happiness with those who have missed opportunities. ( Supplied: Instagram )

The Adelaide media personality said he was moved by many people's responses to his social media post, including one woman who told of her sister's childhood disappointment.

"One lady said her sister had Down syndrome and when she was nine she had a birthday party and she invited every single person in the class," he said.

"On the day they had everything organised, all the cakes, the games — she said her sister was beyond excited by the party, but nobody rocked up.

"She said it didn't just scar her sister but her whole family. It was terrible."

Next weekend's party will be filmed for screening on the South Aussie with Cosi program at a later date.