Alabama

• Linux Users of North Alabama (LUNA) (Huntsville; founded July 1997)
• South Alabama Linux Users Group (SALUG) (Mobile; founded May 28 1996; contact Nullpointer)
• Birmingham Area Linux Users Group (BALUG) (Birmingham; founded 2003; no contact yet)

• Everyone's LUG (ELUG) (Orlando; founded January 1998)

• Atlanta Linux Enthusiasts (ALE) (Atlanta; founded December 1994)
• Classic Hackers University of Georgia Linux Users Group (CHUGALUG) (Athens)

Tennessee

• Nashville LUG) (Vanderbilt University Medical Center; founded October 1997)
• CLLUG Clarksville, TN LUG.

• Duke University LUG (DULUG) (Durham; founded September 1994)
• triLUG (Research Triangle; founded October 1998)
• NC State LUG (Raleigh; founded November 1994)
• Piedmont LUG (Burlington; founded January 1996)
• Charlotte LUG (C-LUG) (Charlotte; founded December 1998)

• TWUUG (Tidewater Unix User Group: Virginia Beach and Tidewater; founded 1990)
• Roanoke Valley GNU/Linux UG (Salem; founded June 1998)
• Virginia Tech LUG (Blacksburg; founded October 1997)
• BLUG (Bedford; founded 1997)
• RiVaLUG (Richmond; founded June 1997)
• Northern Virginia LUG (NOVALUG) (formerly LUGMAN; Chantilly; founded October 1994)
• Yorktown High School LUG (YHSLUG) (Arlington; founded October 1999)
• FredLUG (Fredericksburg, Stafford, Spotsylvania Area. Founded February 2003)
• CHUUG (Charlottesville; founded April 1998)
• Shenandoah Valley LUG (ShenLUG) (Winchester, founded Summer 2000)

• Washington DC LUG (DCLUG) (formerly DC-Linux; Bethesda; founded July 1994)
• UMLUG (University of Maryland at College Park; founded November 1995)
• Laurel-Beltsville LUG (Capitol College, Laurel; founded December 1998)
• UMBC-LUG (University of Maryland Baltimore County; founded October 1997)
• The Penguin Club (Southern Maryland; founded October 1998)
• Baltimore-Washington Beowulf User Group (Greenbelt MD; founded Fall 2000)
• FMLUG (Frederick, Maryland LUG; founded June 2000, contact Troy Holmes)
• CALUG Columbia Area LUG (Columbia; founded April 2000, contact Randy Schrickel)

• PLUG (Philadelphia area; founded December, 1995)
• Western Pennsylvania LUG (Pittsburgh; founded September 1997)
• Carnegie-Mellon University LUG (Pittsburgh; founded September 1998)

• HAMLUGHamilton, Mercer County LUG. Founded June 2001
• NJ-SLUG is the North Jersey Sleepless Linux User Group
• LUNICS (Scotch Plains; ACGNJ founded March 1975)
• LUG/IP (Linux Users Group/In Princeton) ( Lawrenceville, New Jersey)

• New York's Free Software Organization (New York City; founded April 1993)
• New York Linux Users Group (NYLUG) (New York City; founded December 1998)
• Linux Users of New York (LUNY!) (New York City; founded December 1998)
• LILUG Long island LUG (Farmingdale; founded November 1998)

• Connecticut Free Unix Group (CFUG) (Cheshire; founded December 1996)

• Worcester Linux Users' Group (WLUG) (Worcester Polytechnic Institute, Worcester)
• UMass Dartmouth LUG (Dartmouth; founded September 1997)
• Boston Linux and Unix (BLU) (Boston; founded April 1994)

• GNHLUG (Founded October 1994. Coordinator is David Berube
  includes:
  * CentraLUG - (Concord and Lake region LUG)
  * DLSLUG (Dartmouth/Lake Sunapee LUG)
  * KSC LUG (Keene State College LUG)
  * MerriLUG (Merrimack Valley LUG)
  * MonadLUG (Monadnock LUG)
  * SLUG (Seacoast LUG)
  )

Eastern Canadian Linux User Groups

• Scarborough Linux User Group (near Toronto, Ontario)
• OCLUG (Ottawa/Carleton, Ontario; founded March, 1997)
• Linux-Quebéc User Group (Montreal, Quebéc; founded Fall, 1997)
• Gulus Groupe d'utilisateurs de Linux de l'Université de Sherbrooke
  (Sherbrooke, Québec; founded the 14th of August, 1998)
• Peterborough Linux User Group (PLUG) (Peterborough, Ontario; founded Spring, 2003)