Daniel Patrick Lohner, frequently known as Renholdër, is an American musician and record producer best known for his work with Nine Inch Nails and A Perfect Circle. In 2020, he was inducted into the Rock and Roll Hall of Fame as a member of Nine Inch Nails.

Before joining Nine Inch Nails as a live bassist and keyboardist, Lohner co-founded the crossover thrash band Angkor Wat and the industrial thrash band Skrew. He has also performed on releases by Marilyn Manson, Rob Zombie, Tommy Lee's band Methods Of Mayhem, Wes Borland's Black Light Burns project, A Perfect Circle co-founder Billy Howerdel's solo projects, Tool/A Perfect Circle frontman Maynard James Keenan's Puscifer project, Japanese musician Hyde, and Hollywood Undead. He has produced albums for Trust Company, Korn guitarist James "Munky" Shaffer's solo project Fear and the Nervous System, Howerdel, Black Light Burns, Hollywood Undead, and Pentakill. He also produced the soundtrack for the film Underworld. His most recent work includes live performances and production for solo projects from Howerdel, Rammstein singer Till Lindemann and NOFX members Fat Mike and Eric Melvin.