Callan J. Mulligan is an award winning artist and bestselling sci-fi/fantasy author.

Born in 1988, he grew up in the Adelaide Hills of South Australia. 

He was first published in a Primary School Newsletter at the age of five, thanks to a poem about dragons.

Since then, he has written 7 books, recorded 5 albums, filmed 3 movies, and won 1 stand-up comedy competition.

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By the age of 29 he wrote his first published work of fiction, the novella, A Mind of His Own. The debut work received critical acclaim and hit amazon's Top 25 Psychological Thriller list. A few years later, his short stories appeared in Australian science fiction magazines and he published his award winning sci-fi novel, The World Settlers.
The World Settlers broke into global bestselling science-fiction lists, along side titles such as James SA Corey's The Expanse, and Frank Herbert's Dune.

In 2025, Callan launched a YouTube channel (@calmulliganfilms) to showcase his collection of short travel films and global documentaries. The channel has generated over 1 million views. He also shares career lessons and art tutorials on his author channel (@callanjmulligan).

Callan lives with his wife and children on The Gold Coast, Australia, where he is currently working on his first graphic novel.