Following the withdrawal of Pierce Brosnan, O'Loughlin was a candidate for the role of James Bond, until the role was recast with Daniel Craig in 2005, in preparation for Casino Royale (2006).
Graduated from Australia's National Institute of Dramatic Art in Sydney in June 2002, after completing a full-time three year Bachelor of Dramatic Art program.
Enjoys riding motorcycles, climbing rocks, music, and playing his guitar.
Was a fan of the heavy-metal band Iron Maiden as a kid.
Had a one-year holding contract with CBS regarding his role in Moonlight (2007).
Has a sister, Jennifer, who is one year younger than he is.
His parents got divorced when he was 2-years-old. He was born in the city of Canberra but grew up in Sydney. From the age of 10 onward, he commuted between the two cities to spend time with both parents.
His father is a physics teacher and his mother is a nurse (who also plays the piano).
He was roommates with Jonathan Rhys Meyers in New York City during the filming of August Rush (2007). The two portrayed brothers in the movie.
He did a lot of his own stunt work in Moonlight (2007) and had some training in Kung fu and and Tai chi in order to prepare for his role.
His last name is pronounced "O-lock-lin".
Began his acting career in Sydney theater, appearing in plays by Anton Chekhov and Leo Tolstoy.
His stepfather is Canadian.
He is of Irish and Scottish descent. His father teaches physics and astronomy in Sydney, New South Wales, Australia, and his mother is a nurse in Canberra, Australian Capitol Territory, Australia.
Befriended co-star David Blue during the filming of Moonlight (2007). The two have remained good friends.
He resides in West Hollywood, California, USA when not filming, but moves to Hawaii during the shooting schedule for Hawaii Five-0 (2010).
Split from longtime girlfriend Holly Valance in February 2009.
Has two sons, from different mothers, Saxon, born in July 1997, and Lion, born October 25, 2012.
Once worked as a plumber's apprentice.
His girlfriend, Malia Jones, a surfer and model, gave birth to their first child together, a son named Lion, on October 25, 2012. Malia has another son, Spike, from her second marriage.
His middle name has been reported as James.
One of his first professional acting jobs was as a background actor in a TV commercial, playing a member of the Australian military forces.
After premiering in the role of Steve McGarrett on Hawaii Five-0 (2010), BuddyTV, an entertainment website based in Seattle, Washington, USA ranked him #2 on its "TV's 100 Sexiest Men of 2010" list, and #9 on its 2011 list.
In early March 2012, CBS announced that O'Loughlin would miss shooting some episodes of Hawaii Five-0 (2010) while reportedly seeking rehab treatment for dependency on, allegedly, pain medication which had supposedly been prescribed to him for a reported shoulder injury. For several episodes, he had only cameo appearances, which were explained as McGarrett being on a covert mission to North Korea.
In August 2013, Los Angeles, California based charity, "Australians in Film" selected him to be honored with their "Breakthrough Award" at a special ceremony to be held in October 2013 in Los Angeles.
Alex O'Loughlin studied at NIDA, a Drama School in Sydney, Australia.
Is one day younger than his Hawaii Five-0 co-star Scott Caan, who was born on August 23rd 1976.