Joe Martin is a fictional character on the ABC Daytime and The Online Network soap opera All My Children.

Dr. Joe Martin, the head of one of the founding families in Pine Valley, was a widower raising two children, Jeff and Tara, when he met Ruth Brent, a nurse at the hospital where he worked.

Ray threatened and blackmailed the Martins and when Joe refused to give into his demands, he attacked and raped Ruth in a parking lot.

His history at Pine Valley Hospital has been nearly impeccable, except for a brief time when he was forced to step down by allegations made by conniving David Hayward.

Joe has survived a tornado that almost took Tad's life, had a massive heart attack brought on by a confrontation with Dimitri Marick, and dealt with all the problems that have affected his children.