Ronald 'Ron' Brian Underwood (November 6, 1953) is an American director, writer, and producer best known for Tremors (1990), City Slickers (2001), and Heart and Souls (1993).
He is married to Sandy Underwood and they have three children.
Director
- 1973: The New Freedom (short)
- 1976: Courtesy A Good Eggsample (short)
- 1980: Deer In The Works (short) (also producer)
- 1980: The Reference Section (short)
- 1981: Addictions Compulsions And Alternative Highs (also producer)
- 1982: The Stress Mess
- 1982: A Case Of Working Smarter Not Harder (short) (also producer)
- 1983: Library Reporter (short)
- 1985: Too Smart For Strangers (short)
- 1986-1988: ABC Weekends Specials (2 episodes)
- 1990: Tremors (also writer)
- 1991: City Slickers
- 1993: Heart and Souls
- 1994: Speechless
- 1998: Mighty Joe Young
- 2002: The Adventures of Pluto Nash
- 2003: Stealing Sinatra
- 2003: Monk
- 2004: Back When We Were Grownups
- 2004-2005: Boston Legal (2 episodes)
- 2005: Santa Baby
- 2005: In The Mix
- 2006: Holiday In Handcuffs
- 2006: The Year Without A Santa Claus
- 2007-2009: Reaper (3 episodes)
- 2008: The Secret Life Of The American Life
- 2008: Ugly Betty
- 2008: Eli Stone
- 2009: Make It or Break It
- 2009: Drop Dead Diva
- 2010: Heroes
- 2010: Happy Town
- 2010: No Ordinary Family
- 2010-2011: Hellcats
- 2010-2013: Castle (2 episodes)
- 2011: Necessary Roughness
- 2011: Chaos
- 2011: Deck The Halls 2011
- 2011-2012: Harry's Law (2 episodes)
- 2012: Desperate Housewives
- 2012: Burn Notice
- 2012-2013: Scandal (2 episodes)
- 2012-2013: The Glades (3 episodes)
- 2012-2015: Grey's Anatomy (5 episodes)
- 2012-2018: Once Upon a Time (17 episodes)
- 2013: Once Upon a Time in Wonderland
- 2014: Mistresses
- 2014: Witches of East End
- 2014: Resurrection
- 2014-2015: Nashville (2 episodes)
- 2014-2016: Agents of S.H.I.E.L.D. (3 episodes)
- 2016: Quantico
- 2016: Dead of Summer
- 2016: BrainDead (2016)
- 2016: No Tomorrow
- 2016-2019: Hawaii Five-0 (4 episodes)
- 2017: Kevin (Probably) Saves the World
- 2017-2018: The Good Fight (3 episodes)
- 2018-2019: MacGyver (2016) (2 episodes)
- 2018-2019: Magnum, P.I. (2018) (2 episodes)
- 2019: Grand Hotel
- 2019-2021: Evil (2019) (2 episodes)
- 2019-2022: Fear the Walking Dead (4 episodes)
- 2021-2022: Big Shot (4 episodes)
Writer
- 1996: Tremors II Aftershocks (also producer)
- 2003: Tremors
- 2004: Tremors 4: The Legend Begins
- 2015: Tremors 5: Bloodlines
- 2018: Tremors 6: A Cold Day in Hell
- 2020: Tremors 7: Shrieker Island
Producer
- 1973: Dictionary The Adventure Of Words (short) (uncredited)
- 1986: Crawlspace
