Holland "Dutch" Wagenbach is a Los Angeles Police Department detective working at the Barn, a police station, in Farmington in the crime series The Shield. He is portrayed by Jay Karnes.
He is a brilliant detective, who is specialized in solving serial killer cases. He also catches several of them. he is teamed with Claudette Wyms, who later becomes Captain of The Barn. He is also an antagonist of the leader of the corrupt cops Vic Mackey at the police station and he contributes to the downfall of his team.