Chris Vrenna (born 23 February 1967) is an American musician, sound engineer, remixer, songwriter, programmer, and a Grammy-winning producer. He founded the electronic band Tweaker, has been drummer for Trent Reznor's band Nine Inch Nails from 1989 to 1997, and keyboardist and drummer for the band Marilyn Manson between 2004 and late 2011.
In 1996, he worked on the soundtrack for Quake along with Trent Reznor and the rest of NIN. In 2000, he worked for Rogue Entertainment, making the soundtrack for American McGee's Alice. In 2004, after various mismanagement issues at id Software, he replaced Trent Reznor to make Doom 3's soundtrack, along with Tweaker co-star Clint Walsh. His later collaborations with id include the soundtracks for Quake 4 (with Clint Walsh again) and for Quake Champions (with Andrew Hulshult).
| Doom era
| Doom 3 era
| ZeniMax era