Claim: Donnie Wahlberg plays Tom Selleck's character's son on Blue Bloods.

Donald Edmond `` Donnie '' Wahlberg Jr. . -LRB- born August 17 , 1969 -RRB- is an American singer , songwriter , actor , record producer , and film producer . He is a founding member of the boy band New Kids on the Block . Outside of music , he has had roles in the Saw films , The Sixth Sense , Dreamcatcher , and Righteous Kill , also appearing in the World War II miniseries Band of Brothers as First Lieutenant Carwood Lipton . From 2002 to 2003 , he starred in the crime drama Boomtown . He has been starring in the drama series Blue Bloods as Danny Reagan with Tom Selleck -LRB- his TV father -RRB- and Bridget Moynahan -LRB- his TV sister -RRB- since 2010 , and since 2014 is an executive producer of the TNT reality television show Boston 's Finest . He was nominated for Choice Scream at the 2008 Teen Choice Awards for his work in the Saw films . He has also produced and starred in `` Rock this Boat '' , `` Donnie Loves Jenny '' and `` Return of the Mac '' on Pop TV .