R. U. Sirius (born Ken Goffman in 1952) is an American writer, editor, talk show host, musician and cyberculture celebrity. He is best known as co-founder of Mondo 2000 magazine and its original editor-in-chief from 1989 to 1993.
From 1984 onward, Sirius edited a counterculture magazine that started as High Frontiers with a focus on recreational drug use. In 1988 it was renamed Reality Hackers to reflect increased content about digital culture issues. The following year it became Mondo 2000.
Sirius left Mondo 2000 in 1993, and the magazine folded in 1998 after 17 issues.
Sirius recruited Timothy Leary to be a contributing editor for Mondo 2000 and taught an online course in Leary's philosophy for the Maybe Logic Academy. He co-authored Leary's last book, Design for Dying (1998), and wrote the introduction for a 1998 edition of Leary's 1968 book The Politics of Ecstasy.
Sirius appeared in the films Synthetic Pleasures (1995) and Conceiving Ada (1997). His mid-1990s techno-rock band Mondo Vanilli recorded an unreleased CD titled IOU Babe for Trent Reznor's Nothing Records. The music is available on Bandcamp IOU Babe, by Mondo Vanilli.
During the 2000s Sirius published four books. In 2005 he began hosting two weekly podcasts, the RU Sirius Show and NeoFiles. Both went on unannounced hiatus in August 2007 because their financial backer withdrew his support. In September 2006 Sirius helped launch the webzine 10 Zen Monkeys with fellow GettingIt.com alumni Jeff Diehl and Lou Cabron.
- High Frontiers. 1984-1988.
- Reality Hackers. 1988-1989.
- Mondo 2000. 1989–1993.
- Axcess. 1998.
- GettingIt.com. 1999–2000.
- RU Sirius Show. 2005–2007.
- NeoFiles. 2005–2007.
- H+ Magazine. 2008–2010.
- Acceler8or. 2011–2012.
- Transcendence: The Disinformation Encyclopedia of Transhumanism and the Singularity. (2015) (with Jay Cornell). Disinformation Books. ISBN 978-1938875090.
- Everybody Must Get Stoned. Rock Stars On Drugs. (2009). Citadel. ISBN 978-0-8065-3073-4.
- True Mutations. (2007) Pollinator Press. ISBN 978-0-9774410-1-3.
- Counterculture Through the Ages: From Abraham to Acid House. (2004) Villard Books. ISBN 0-375-50758-2.
- The Revolution: Quotations From Revolution Party Chairman R. U. Sirius. (2000) Feral House. ISBN 0-922915-62-8.
- 21st Century Revolutionary: R. U. Sirius 1984–1998. (1999) Fringecore ISBN 90-76207-51-8.
- Design for Dying. (1998) (with Timothy Leary) HarperCollins. ISBN 0-06-092866-2.
- How to Mutate & Take Over the World: an Exploded Post-Novel. (1997) (with St. Jude) Random House. ISBN 0-517-19832-0.
- Cyberpunk Handbook: The Real Cyberpunk Fakebook. (1995) (with St. Jude and Bart Nagel) Random House. ISBN 0-679-76230-2.
- Mondo 2000: A User's Guide to the New Edge. (1992) (editor with Rudy Rucker & Queen Mu) Harperperennial Library. ISBN 0-06-096928-8.
- Steal This Millennium. With Stew Albert. Salon.com, October 19, 2000.
- The RU Sirius Show and NeoFiles. 80-odd podcast interviews, and counting. (With co-hosts including Sherry Miller, Diana Brown, Steve Robles and producer Jeff Diehl.)
- "Todd Brendan Fahey and His Acid-Laden Writing Style"
- "Introducing the Mondo 2000 History Project – 10 Zen Monkeys". Retrieved 30 August 2017.
- See Works by R. U. Sirius at Project Gutenberg.
- The Whole World is Talking Archived 2013-05-07 at the Wayback Machine by Cooke and Lehrer
- This Is the First Article We Ever Published About the Internet in The Nation by Richard Kreitner, November 19, 2014
- "Program VR Oslo 94". Archived from the original on 2011-05-07. Retrieved 2016-01-23.
-  Archived April 16, 2004, at the Wayback Machine
- Sirius, R. U. "20 Point Party Platform for National Politics". Archived from the original on 2008-04-22. Retrieved 2010-02-24.
- Available at The RU Sirius Show and NeoFiles respectively.
-  Archived December 4, 2008, at the Wayback Machine
- "H+ Magazine homepage".
- "Acceler8or". www.acceler8or.com. Retrieved 30 August 2017.
- "Accelerate with Acceler8or! – KurzweilAI". www.kurzweilai.net. Retrieved 30 August 2017.
- "Mondo 2000, influential 90s cyberculture magazine, returns online". 24 August 2017. Retrieved 25 August 2017.