Clark takes over from Phil Veivers.
Workington Chairman Garry Mounsey said: The board has a specific aim of building a primarily locally based team with a mix of experience and talented youth.
“Dave has a background in coaching winning teams as well as International player development experience that is second to none.
“He will be the driving force behind our aim to produce a strong team that can kick on from League 1.
Clark said: I’m very honoured to join Workington Town. The Directors shared their ambitions with me and I was impressed with how they want to position the club for the future.
“My coaching and player development experience aligns completely with those ambitions and I look forward to what will I’m sure be a, very challenging but enjoyable 2017 season.”