Matthew Jerome Barr (born February 14, 1984) is an American actor, best known for his role as Johnson "Johnsie" Hatfield in the series Hatfields & McCoys (2012), Danny McNamara in the CBS/Paramount+ adventure television series Blood & Treasure (2019–2022), and Hoyt Rawlins in the series Walker (2021–2024) and its prequel Walker: Independence (2022–2023).

Barr also played Mike Fleming in the series Commander in Chief (2005), Ian Banks in the series One Tree Hill (2006–2007), Christopher Sullivan in the mystery-horror miniseries Harper's Island (2009), and Dan Patch in The CW series Hellcats (2010–2011).

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