Editing Sum 41 (section)

==Band members==
<gallery perrow="5" caption="Sum 41 live at [[Southside Festival]] 2024" widths="180" heights="180">
Sum 41 - Southside Festival 2024 - 1DX 2908.jpg|Deryck Whibley
Sum 41 - Southside Festival 2024 - DSC2683.jpg|Dave "Brownsound" Baksh
Sum 41 - Southside Festival 2024 - 1DX 2951.jpg|Jason "Cone" McCaslin
Sum 41 - Southside Festival 2024 - DSC2943.jpg|Tom Thacker
Sum 41 - Southside Festival 2024 - 1DX 2926.jpg|Frank Zummo
</gallery>

{{col-begin}}
{{col-2}}
'''Final lineup'''
* [[Deryck Whibley]] – lead vocals, rhythm guitar (1997–2025), keyboards (2004–2025), lead guitar (1996–1997, 2006–2010),<ref name="altpress1"/> backing vocals (1996–1997), occasional drums (2001–2010)
* [[Dave Baksh|Dave "Brownsound" Baksh]] – lead guitar, backing and occasional co-lead vocals (1997–2006; 2015–2025)<ref name="Wikipedia Fact or Fiction">{{cite web|first=Graham|last=Hartmann|url=http://loudwire.com/sum-41-wikipedia-fact-or-fiction/|title=Wikipedia Fact or Fiction|website=Loudwire.com|date=November 2, 2016|access-date=March 28, 2022}}</ref>
* [[Jason McCaslin|Jason "Cone" McCaslin]] – bass, backing vocals (1999–2025)<ref name="altpress1">{{cite web|first=Annie|last=Zaleski|url=http://www.altpress.com/features/entry/it_feels_right_sum_41s_deryck_whibley_and_brownsound_discuss_reuniting|title="It feels right": Sum 41's Deryck Whibley and Brownsound discuss reuniting|publisher=altpress|date=August 14, 2015|access-date=March 28, 2022|archive-url=https://web.archive.org/web/20150816193053/http://www.altpress.com/features/entry/it_feels_right_sum_41s_deryck_whibley_and_brownsound_discuss_reuniting|archive-date=August 16, 2015|url-status=dead|df=mdy-all}}</ref>
* [[Tom Thacker (musician)|Tom Thacker]] – lead guitar, backing and occasional lead vocals (2009–2025; touring 2007–2009),<ref name="altpress1"/><ref name="auto">{{cite web|first=Helen|last=Chan|url=http://emptylighthouse.com/sum-41-overcoming-worst-preparing-comeback-1252450918|title=Sum 41: Overcoming the Worst, Preparing for a Comeback|website=Emptylighthouse.com|date=June 2, 2015|access-date=January 18, 2018}}</ref> rhythm guitar (2015–2025), keyboards (2016–2025)
* [[Frank Zummo]] – drums, occasional backing vocals (2015–2025)<ref name="altpress1"/>
{{col-2}}
'''Former members'''
* [[Steve Jocz|Steve "Stevo32" Jocz]] – drums, backing and occasional lead vocals (1996–2013)<ref name="Jocz"/>
* Jon Marshall – lead vocals, rhythm guitar (1996–1997),<ref name="auto"/><ref name="Virgin France">{{cite journal|first=Marine|last=Pineau|title=Sum 41 annonce un concert en France et c'est déjà complet |journal=Virgin Radio France |date=October 7, 2015}}</ref> bass (1996)<ref>{{Cite AV media |url=https://www.youtube.com/watch?v=gTf3pAK8kbI |title=SUM 41 ORIGINAL DRUMMER STEVO 32 SECOND VIDEO ! OLD DEMOS! |date=2024-06-06 |last=Stevo32Drums |access-date=2024-07-13 |via=YouTube}}</ref>
* Grant McVittie – bass, backing vocals (1996)
* Richard "Twitch" Roy – bass, backing vocals (1996–1998)<ref name="auto"/>
* [[Mark Spicoluk]] – bass, backing vocals (1998–1999)

'''Former touring musicians'''
* Matt Whibley – keyboards (2011)
* [[Darrin Pfeiffer]] – drums (2015)<ref>{{Cite web|first=Alan|last=Cross|url=https://www.ajournalofmusicalthings.com/goldfinger-drummer-darrin-pfeiffer-on-joining-sum-41/|title=Goldfinger Drummer Darrin Pfeiffer on Joining Sum 41|website=A Journal of Musical Things|date=August 26, 2015|access-date=March 28, 2022}}</ref>
{{col-end}}

===Timeline===
{{#tag:timeline|
ImageSize  = width:900 height:auto barincrement:20
PlotArea   = left:90 bottom:95 top:0 right:0
Alignbars  = justify
DateFormat = mm/dd/yyyy
Period     = from:09/28/1996 till:03/30/2025
TimeAxis   = orientation:horizontal format:yyyy
Legend     = orientation:vertical position:bottom columns:4
ScaleMajor = increment:3 start:1997
ScaleMinor = increment:1 start:1997

Colors =
 id:lvoc   value:red          legend:Lead_vocals
 id:bvoc   value:pink         legend:Backing_vocals
 id:lg     value:teal         legend:Lead_guitar
 id:rg     value:brightgreen  legend:Rhythm_guitar
 id:key    value:purple       legend:Keyboards
 id:b      value:blue         legend:Bass
 id:dr     value:orange       legend:Drums
 id:tour   value:yellow       legend:Touring_member
 id:studio value:black        legend:Studio_album
 id:EP     value:gray(0.7)    legend:EP
 id:bars   value:gray(0.95)

BackgroundColors = bars:bars

LineData =
 layer:back
  color:EP layer:back
   at:06/27/2000
  color:studio
   at:05/08/2001
   at:11/26/2002
   at:10/12/2004
   at:07/24/2007
   at:03/29/2011
   at:10/07/2016
   at:07/19/2019
   at:03/29/2024

BarData =
 bar:Jon     text:"Jon Marshall"
 bar:Deryck  text:"Deryck Whibley"
 bar:Dave    text:"Dave Baksh"
 bar:Tom     text:"Tom Thacker"
 bar:Grant   text:"Grant McVittie"
 bar:Richard text:"Richard Roy"
 bar:Mark    text:"Mark Spicoluk"
 bar:Cone    text:"Jason McCaslin"
 bar:Steve   text:"Steve Jocz"
 bar:Frank   text:"Frank Zummo"

PlotData=
 width:13 textcolor:black align:left anchor:from shift:(10,-4)
 color:lvoc
 bar:Jon     from:start till:06/01/1997 
 bar:Deryck  from:06/01/1997 till:end

 color:lg
 bar:Deryck  from:start till:06/01/1997  
 bar:Deryck  from:05/11/2006 till:06/24/2010 width:9
 bar:Dave    from:06/01/1997 till:05/11/2006 
 bar:Dave    from:08/14/2015 till:end
 bar:Tom     from:07/18/2007 till:end 

 color:rg   
 bar:Jon     from:start till:06/01/1997 width:3
 bar:Deryck  from:11/01/1996 till:12/01/1996 width:7
 bar:Deryck  from:06/01/1997 till:end width:3
 bar:Tom     from:08/14/2015 till:end width:7

 color:key
 bar:Deryck  from:03/01/2004 till:end  width:7
 bar:Tom     from:10/05/2016 till:end width:5

 color:b
 bar:Grant   from:start till:11/01/1996 
 bar:Jon     from:11/01/1996 till:12/01/1996 width:3
 bar:Richard from:12/01/1996 till:06/01/1998
 bar:Mark    from:06/01/1998 till:01/01/1999
 bar:Cone    from:01/01/1999 till:end

 color:dr
 bar:Steve   from:start till:04/18/2013 
 bar:Frank   from:07/19/2015 till:end 

 color:bvoc width:3
 bar:Steve   from:start till:04/18/2013
 bar:Deryck  from:start till:06/01/1997  
 bar:Grant   from:start till:11/01/1996 
 bar:Richard from:12/01/1996 till:06/01/1998
 bar:Dave    from:06/01/1997 till:05/11/2006 
 bar:Mark    from:06/01/1998 till:01/01/1999
 bar:Dave    from:08/14/2015 till:end 
 bar:Cone    from:01/01/1999 till:end
 bar:Tom     from:07/18/2007 till:end 

 color:tour
 bar:Tom     from:07/18/2007 till:01/01/2009 width:7
}}