Jack Holden is a fictional character from the Australian television soap opera Home and Away, played by Paul O'Brien.

Jack's main relationship storylines are with Martha MacKenzie (Jodi Gordon) and Sam Holden (Jessica Chapnik).

O'Brien decided to leave the series in 2008 and in the 2008 season finale, Jack was accidentally shot in the chest at a construction site by fellow police officer, Angelo Rosetta (Luke Jacobz).

[1] Whilst the characters were separated on-screen, they had gained a fan base on the Internet that believed Jack should be with Martha and wanted the pair to reunite.

"[2] Gordon also hoped for a happy ever after type ending for the two characters if they were to ever leave the serial commenting: "If I had it my way, and I got to write the scripts then I'd make it happily ever after, Martha and Jack riding off into the sunset.

The girl's father, Harry Chambers (Rodney Dobsen) arrives in town holding Jack responsible for his daughter's death.

Following all the furore, A town meeting is held and it is revealed Jack had returned fire in self-defence and the locals believe him.

When Jack finds that Corey is poisoning Irene Roberts (Lynne McGranger) he tries to warn Martha but she puts it down to his jealousy.

Jack and Martha marry at St. James' Church with their friends and family present but the reception is ruined when Eve Jacobsen (Emily Perry) the Summer Bay stalker causes an explosion which kills her, Tracey Thompson (Sarah Enright) and Elaine Armstrong (Julie Hudspeth) and leaves several other including Jack and Martha.

Rachel Armstrong (Amy Mathews) arranges for a group of burn victims to be airlifted to the city for surgery and Martha is among the casualties.

Ash Nader (Ben Guerens), an old friend of Jack arrives and takes an interest in Martha and they become a couple.

Shane Deeks (Mike Duncan), Sam's ex-husband arrives in Summer Bay and tries to snatch Rory.

He is further shocked when attending Peter Baker's (Nicholas Bishop) stag night to find Martha working as a pole dancer.

Jack and Sam marry but when they return from their honeymoon, they discover escaped criminal Johnny Cooper is hiding out.

When Jack finds out about Sam's drug deals via a letter left by Johnny, he ends the marriage with her and he threatens to call the police.

Jack hands in the letter but Sam with one final act of revenge lets the police know about him tampering with the evidence from Martha's previous arrest.

Ross Buckton (David Downer) investigates the case and has a theory that Jack and Martha killed Sam because she was in the way of their relationship.

After acting on a tip from Belle Taylor (Jessica Tovey), who works for the Coastal News, Jack investigates a development site where toxic waste is buried, causing a cancer cluster.

[8] At the 2007 Inside Soap Awards, O'Brien and Gordon were nominated for "Best Storyline" for Jack and Martha's wedding day.