Chester Karol "Ziggy" Sobotka is a fictional character on the HBO drama The Wire, played by actor James Ransone. Though his father Frank Sobotka was a well-respected stevedore union leader, Ziggy's often reckless and juvenile behavior gained him little respect among other members of the union and The Greek's crime organization.

Ziggy is Frank Sobotka's son and Nick's cousin. Ziggy was a dock worker in his father's stevedores union, but he was also involved in criminal activity. Like most of the port workers, Ziggy frequented Delores' bar, where he amuses the other customers with his drunken antics. He was known for publicly exposing himself. His work on the docks was often poor and his father would regularly fire him and then reinstate him. Due to his lack of seniority, Ziggy received little work. He is often portrayed as a clumsy and inept beneficiary of his father's hard work and stewardship of the union who is more interested in goofing off than working hard. He is close to his older cousin Nick, who often bails him out when his various money-making schemes backfire. Despite his shortcomings, however, he has a better understanding of technology than many of his colleagues. He uses his computer research skills to assist Nick in his dealings with the Greeks.