Groezrock is an annual music festival that took place in Meerhout, Belgium. It started as a small rock and pop festival with one stage and a few hundred people attending, but evolved into a large punk rock/hardcore punk festival, with attendances exceeding 30,000.

The festival had one stage until 2003, when it added a second stage called Back-to-Basics, which was reserved for more hardcore-oriented bands. Since 2006 the festival has taken place over multiple days, and grew to three stages in 2009 and four stages in 2012.

It was announced in October 2017 that the 2018 edition of Groezrock would not be taking place in the Spring, and would instead be an indoor festival in the autumn. The festival have stated that they will be "back in full force" with the usual format in 2019.

1992 1992: Grandma's Toy, Buckle Juice, Dinky Toys, Pitti Polak

1993 1993: Give Buzze, The Establishment, Ashbury Faith, The Scabs

1994 1994: One Hes, Inna Nip, Rusk, Groggy's Crawl, Thermos, Burma Shave, Metal Molly, Jack of Hearts, Soapstone, B.J. Scott

1995 1995: Oxid, Cesspool, Quip, Dildo Warheads, Mutilated, Deeper, Brotherhood Foundation, L.A. Doors

1996 1996: Small Yellow Fish, Protest, Underdog!?, Cooper, Def Real, The Romans, Brotherhood Foundation, Deviate

1997 1997 (26 April): Ryker's, Heideroosjes, Brotherhood Foundation, Gwyllions, Instructions For Use, Igor's Record Shop, Cornflames, Flee Bag

1998 1998 (25 April): Millencolin, Good Riddance, |Intensity, AFI, Hard Resistance, Undeclinable Ambuscade, Pancake, Instructions For Use, Sixpack Joe, Cooperate, Plan 9

1999 1999 (24 April): No Fun at All, Ten Foot Pole, 59 Times The Pain, Good Riddance, 88 Fingers Louie, Buck Wild, Bombshell Rocks, Void Section, Janez Detd., 2 Late, Access Denied, Nevergreen, PN

2000 2000 (29 April): No Fun at All, Heideroosjes, Down By Law, Liberator, Bouncing Souls, Within Reach, Facedown, Vision, 5 Days Off, I Against I, Skin Of Tears, Apeshit, Delate, Figure It Out

2001 2001 (28 April): Square One, Buckle Up, Powerhouse, Deviates, Venerea, Burning Heads, Adhesive, Stoned, Randy, Undeclinable, 59 Times the Pain, Snuff, SNFU, Ignite, Voodoo Glow Skulls

2002 2002 (27 April): Bad Religion, Sick of It All, Guttermouth, Down By Law, Satanic Surfers, Rise Against, Undeclinable Ambuscade (surprise act), Circle, .Calibre, Kill Your Idols, Horace Pinker, Flatcat

2003 2003 (26 April):

Main: Dropkick Murphys, Biohazard, Glassjaw, Ten Foot Pole, Hot Water Music, dredg, Flogging Molly, Gameface, Randy, The Shandon, Face Tomorrow, Skool's Out

B2B: Severance, Between The Lines, Support, Terror, Caliban, Give Up the Ghost, Stairland, Poison the Well

2004 2004 (24 April):

Main: Millencolin, Sick of It All, Heideroosjes, Mad Caddies, Madball, Pulley, Strung Out, Ten Foot Pole, Midtown, The Almighty Trigger Happy, Travoltas, Belvedere, Beatsteaks

B2B: E.Town Concrete, Stretch Arm Strong, Liar, The Bronx, The Promise, Cornflames, Rise and Fall, Champion

2005 2005 (Saturday 30 April)

Main StageBack To Basics StageLagwagon Hatebreed Mad Caddies Flogging Molly 7 Seconds Boysetsfire Rise Against Tsunami Bomb Strike Anywhere Only Crime Capdown Smoke or Fire SFPCoheed and Cambria Ringworm Hopesfall Street Dogs Alexisonfire From Autumn to Ashes Modern Life Is War Maroon The Setup Malkovich

2006 2006 ( 28 and 29 April)

Friday 28 April

Main StageTaking Back Sunday Thrice Goldfinger Underoath Silverstein Aiden Say Anything

Saturday 29 April

Main StageBack To Basics StageBad Religion Dropkick Murphys Me First and the Gimme Gimmes Sick of It All Less Than Jake No Use for a Name Anti-Flag Death by Stereo The Lawrence Arms Peter Pan Speedrock A Wilhelm Scream LattermanPath of Resistance All Out War Born from Pain Comeback Kid Raised Fist Himsa Bold The Maple Room Officer Jones and HPCP The Spirit That Guides Us The Banner

2007 ( 27 and 28 April)

Friday 27 April

We Rock Stage (Main Stage)EASTPAK Core StageNew Found Glory The All-American Rejects Motion City Soundtrack Big D and the Kids Table Saosin Enter ShikariDeath by Stereo Caliban No Turning Back Stretch Arm Strong Senses Fail Gallows

Saturday 28 April

We Rock Stage (Main Stage)EASTPAK Core StageLostprophets Jimmy Eat World Lagwagon Strung Out Rise Against Tiger Army Mad Caddies MxPx The Ataris Street Dogs Hit the Lights Death Before DiscoHatebreed Ignite Terror Converge Sparta Aiden The Bronx Deadline Full Blown Chaos Cancer Bats mewithoutYou

2008 ( 9 and 10 May)

Friday 9 May

Main StageEASTPAK Core StageBilly Talent Anti-Flag Alkaline Trio Heaven Shall Burn All Time Low Mayday Parade Set Your GoalsHot Water Music Finch Silverstein The Audition Strike Anywhere The Blackout

Saturday 10 May

Main StageEASTPAK Core StageBad Religion Thursday Face to Face The Planet Smashers 59 Times the Pain No Fun at All The Toasters A Wilhelm Scream The Loved Ones El Guapo Stuntteam The Bones The FlatlinersStory of the Year Sick of It All Agnostic Front Parkway Drive The Bouncing Souls The Setup HORSE The Band Do Or Die This Is Hell Cursed Suicide Silence Bury Your Dead

2009 ( 17 and 18 April)

Friday 17 April

Main StageEASTPAK Core StageETNIES Back To Basics StageBullet For My Valentine Taking Back Sunday Underoath MxPx Catch 22 You Me At Six Kid DownThursday Bring Me the Horizon Poison The Well Senses Fail United Nations Escape the FateAmenra P.O.Box VersaEmerge Innerpartysystem Sounds Like Violence Campus

Saturday 18 April

Main StageEASTPAK Core StageETNIES Back To Basics StageNOFX Rise Against The Get Up Kids No Fun at All The Living End The Vandals The Academy Is... The Aquabats Street Dogs The Unseen The Flatliners Gino's EyeballWalls Of Jericho Bleeding Through Comeback Kid Mad Sin Darkest Hour First Blood The Ghost Of A Thousand Architects Emery Misery Signals Bane OutbreakBackfire! Nations Afire Death Before Dishonor The Sedan Vault Billy The Kill Mid Air Collision True Colors This Is a Standoff Beneath the Massacre Tenement Kids Nuns Go Riot Tackleberry

2010 ( 23 and 24 April):

Friday 23 April

Main StageEASTPAK Core StageETNIES Back To Basics StageThe Mighty Mighty Bosstones Face To Face Glassjaw Millencolin Caliban The Real McKenzies The SwellersFuneral For A Friend Agnostic Front Alesana Haste the Day A Skylit Drive Holding Onto HopeThe Friday Night Boys Banner Pilot Adept This Is Hell Young Guns Grey Like Masquerade

Saturday 24 April

Main StageEASTPAK Core StageETNIES Back To Basics StageBad Religion Pennywise AFI Sum 41 Lit The Bouncing Souls 88 Fingers Louie Strike Anywhere Zebrahead MC Lars Pour Habit MuteStory Of The Year Parkway Drive The Bronx Mustard Plug The Aggrolites Despised Icon A Wilhelm Scream Dance Gavin Dance The Ghost of a Thousand Winds of Plague The Warriors 50 LionsH2O Good Clean Fun Born from Pain Rise and Fall Stick to Your Guns Steak Number Eight Mariachi El Bronx Defeater Static Radio In Fear and Faith Asking Alexandria

2011 22 and 23 April

Friday 22 April

Main StageEASTPAK Core StageETNIES Back To Basics StageFlogging Molly Hatebreed Further Seems Forever Millencolin Danko Jones Sick of It All The Black Pacific Cute Is What We Aim For Rufio Craig's Brother Army of FreshmenUnderoath August Burns Red Every Time I Die Circa Survive Thursday The Blackout Whitechapel Twin Atlantic We Came As Romans Bleed from WithinMorning Again Devils Brigade Shai Hulud Cancer Bats No Friends Grey Area Veara Blade The Acacia Strain Miss May I Impending Doom

Saturday 23 April

Main StageEASTPAK Core StageETNIES Back To Basics StageNOFX Dropkick Murphys Descendents Boy Sets Fire Dashboard Confessional Thursday Goldfinger Sugarcult Piebald Streetlight Manifesto Teenage Bottlerocket Dead to MeThe Used Saves the Day Blood for Blood Madball Snapcase Comeback Kid Street Dogs Homer Asking Alexandria Old Man Markley Blacklist RoyalsH2O CIV Brotherhood Foundation No Trigger The Ghost Inside Of Mice & Men Hoods Dear Landlord Grave Maker Cruel Hand Social Suicide

2012 28 and 29 April

Saturday 28 April

Main StageImpericon StageETNIES Back To Basics StageAcoustic StageRancid Lagwagon Face To Face Yellowcard Heideroosjes The Bouncing Souls Reel Big Fish Belvedere None More Black The Menzingers Authority Zero ChixdiggitParkway Drive Heaven Shall Burn The Dillinger Escape Plan Evergreen Terrace The Ghost Inside Miss May I For Today Royal Republic We Are the In Crowd The Copyrights PaceshiftersGallows Hazen Street Lifetime Verse Set Your Goals The Wonder Years Off With Their Heads Hostage Calm Confession B.E.A.R Counterpunch BanquetsGarret Klahn Face Tomorrow Dustin Kensrue Vienna Yellowcard The Bouncing Souls Mikey Erg

Sunday 29 April

Main StageImpericon StageETNIES Back To Basics StageAcoustic StageRefused Simple Plan Thrice Good Riddance Alkaline Trio Hot Water Music Motion City Soundtrack MxPx Zebrahead Billy The Kill Versus The WorldUnearth Terror Anti-Flag The Bronx Architects Your Demise The Old Firm Casuals The Dangerous Summer Make Do and Mend Wolves Like UsGorilla Biscuits 7 Seconds Slapshot DYS Such Gold Cobra Skulls Trigger Effect Sunpower Red City Radio JuniusChuck Ragan Laura Jane Grace Dave Hause Mike Herrera Jonah Matranga Anti-Flag Kevin Seconds

2013 27 and 28 April

Saturday 27 April

Monster Stage (Main Stage)Impericon StageETNIES StageAcoustic StageRise Against Rocket From The Crypt Pennywise Hatebreed Frank Turner and the Sleeping Souls The Aquabats Pulley A Wilhelm Scream Streetlight Manifesto The Riverboat Gamblers Far From Finished The RocketTurbonegro Texas Is The Reason ...And You Will Know Us by the Trail of Dead Grade Emmure The Kids Samiam Joey Cape's Bad Loud Chelsea Grin Crossfaith Crushing CasparsComeback Kid Kid Dynamite Title Fight Implants Trapped Under Ice The Story So Far AC4 Obey The Brave John Coffey Six Ft Ditch Attila Buried In VeronaDave Hause Jonny Two Bags Walter Schreifels Scorpios Kristopher Roe Russ Rankin Miracles Minx

Sunday 28 April

Monster Stage (Main Stage)Impericon StageETNIES StageAcoustic StageBad Religion Billy Talent The Used The Starting Line Less Than Jake Strung Out The Ataris The Flatliners Smoke or Fire The Dopamines NothingtonKillswitch Engage Bring Me the Horizon August Burns Red Sparta Attack Attack! Narrows Adept Stick to Your Guns While She Sleeps BastionsFlag Into Another Strife Polar Bear Club First Blood Old Man Markley Pure Love Iron Chic Midnight Souls Masked Intruder The Front BottomsGeoff Rickly Vinnie Caruana Rocky Votolato Tim Vantol Rob Lynch Into It. Over It. PJ Bond Arizona & Grey Like Masquerade

2014 2 and 3 May

Friday 2 May

Monster Stage (Main Stage)Impericon StageETNIES StageMacbeth StageNOFX Brand New Descendents Alkaline Trio boysetsfire The Lawrence Arms The Menzingers Bodyjar Gameface Atlas Losing Grip AstpaiQuicksand Taking Back Sunday Ignite Madball Terror Saves The Day The Wonder Years Bayside Wisdom in Chains Devil in MeH2O Paint It Black La Dispute Iron Chic I Am The Avalanche Deez Nuts Red City Radio PUP RestorationsEverlast Larry And His Flask Tim Barry INVSN Chunk! No, Captain Chunk! Kids Insane My Extraordinary Fathoms Still Bust The Tramps

Saturday 3 May

Monster Stage (Main Stage)Impericon StageETNIES StageMacbeth StageThe Offspring The Hives New Found Glory Screeching Weasel All Snuff Funeral Dress The Casualties The Smith Street Band Elway Get DeadFalling In Reverse Caliban The Devil Wears Prada The Ghost Inside Norma Jean Doomriders I Killed The Prom Queen Apologies, I Have None Drug Church The Charm The FuryJudge Modern Life Is War Cro-Mags Touché Amoré Liferuiner The Setup Done Dying Fabulous Disaster The PriceduifkesThe Toasters Crazy Arm Bim Skala Bim Bury Tomorrow Blitz Kids Edward In Venice Shell Beach River Jumpers Moments The Ignored

2015 1 and 2 May

Friday 1 May

Monster Stage (Main Stage)Impericon StageBack to Basics StageThe Revenge StageMacbeth StageSocial Distortion Pennywise Lagwagon Broilers Atreyu Motion City Soundtrack Against Me! The Dwarves Masked Intruder The Swellers