|Profession:||HPD: Police Officer|
Matthew Williams (d. 2014)
|Played by:||Scott Caan|
|Seasons:||NCIS: Los Angeles: 3|
Hawaii Five-0: 1, 2, 3, 4, 5, 6, 7, 8, 9
|First episode:||Hawaii Five-0:|
|Appears in:||2 series, 10 seasons, 1+ episodes|
Daniel "Dan" Williams is a former HPD Police Officer who is now the second-in-command of the Hawaii Five-0 Task Force led by Steven McGarrett.