List of Monk characters

The following is a list of characters from Monk, an American comedy-drama detective television series created by Andy Breckman and starring Tony Shalhoub as Adrian Monk. Monk's assistant Sharona Fleming, portrayed by Bitty Schram, was replaced by Natalie Teeger, portrayed by Traylor Howard, halfway through the third season. The rest of the principal cast remained consistent throughout the series.

Adrian Monk is the only character to appear in all 125 episodes.