Mark Moses is an American actor, best known for his roles as Paul Young in the ABC comedy-drama Desperate Housewives (2004–2011) and as Herman "Duck" Phillips in the AMC period drama Mad Men (2007–2015).

Paul Young is a fictional character on ABC television series Desperate Housewives. The character is played by actor Mark Moses, and is the widower of Mary Alice Young, the show's narrator. After leaving the show in the third season, Paul returned in the sixth season's finale and becomes a regular again in the seventh season, in which he is the center of the yearly mystery.