Sidsel Margrethe Endresen (født 1952) er en norsk jazzvokalist, komponist og tekstforfatter. Hun har mottatt en rekke priser og utmerkelser, blant annet fem Spellemannpriser, og ble innlemmet i Rockheim Hall of Fame i 2023.
Siden 1976 har hun vært bosatt i Oslo og deltatt på en rekke utgivelser med vokalgruppen Chipahua (1979–) og Jon Eberson Group (1980–1987), og medvirkende hos bl.a. Lava (1982–1984). I tillegg har hun i samarbeid med Django Bates, Jon Christensen og Nils Petter Molvær, gitt ut So I write (1990) og Exile (1994) på ECM, fulgt av duetter med Bugge Wesseltoft: Night song (1994) og Duplex ride (1998) på Curling Legs og Out here, in there (Jazzland 2002).
Sammen med Elin Rosseland og Eldbjørg Raknes dannet hun improtrioen ESE 1995-1999 (Gack, Jazzland 1998). Videre utviklet hun Undertow (Jazzland 2000) med Audun Kleive, Patrick Shaw Iversen, Roger Ludvigsen (samt Molvær og Wesseltoft), skrev filmmusikk til Runi Langums Expedition (2000) og var solist i sin selvskrevne opera Lautleben (2001) der Rolf Wallin komponerte. Siden har hun turnert i trio med Christian Wallumrød og Jan Bang, samt i trio med Thomas Strønen og Ståle Storløkken (Humcrush 2006).
Hun fikk Spellemannprisen i 1981 sammen med Jon Eberson Group, i 1984 med Jon Eberson, i 1998 og 2002 med Bugge Wesseltoft og i 2012 med Stian Westerhus. I tillegg har hun vært nominert til prisen i 1987 for Pigs and Poetry med Jon Eberson, 1994 for låten «Only Love» med Frode Alnæs og 2000 for Undertow.
Hun underviser ved Norges musikkhøgskole hvor hun er professor II ved jazz-seksjonen.
Diskografi Album Pigs and Poetry (1987), med Jon Eberson Etterlatte sanger (1988), med Jonas Fjeld So I Write (1990) Exile (1994) Nightsong (1995), med Bugge Wesseltoft Kullboksrytter (1995), med Out to Lunch & Den norske strykekvartett Duplex Ride (1998), med Bugge Wesseltoft Gack (1999), med Eldbjørg Raknes & Elin Rosseland Undertow (2000) Undertow – The Remixes (2001) Out Here, In There (2002), med Bugge Wesseltoft Merriwinkle (2003), med Christian Wallumrød & Helge Sten One (2006) Live Remixes Vol. 1 (2008), med Punkt & Jon Hassell ha! (2011), med Humcrush Bell Time (2011), med Bram Stadhouders & Jim Black Didymoi Dreams (2012), med Stian Westerhus Bonita (2014), med Stian Westerhus Debris In Lower Earth Orbit (2015), med Twinkle3 Hum (2018), med Jan Bang Singler Am I Saying Goodbye?/Piggy Piggy (1987), med Jon Eberson Stages I (1994) Okay/Epilogue (1998), med Bugge Wesseltoft Truth/Try (2002), med Bugge Wesseltoft Try (2002), med Bugge Wesseltoft Duplex Ride – The Remixes (2012), med Bugge Wesseltoft Jon Eberson Jive Talking (1981) Polarities (1982) City Stories (1984) Stories (1985) Stash (1986) Backhand Smash! (1989) Jive Talking, Visions and Other Stories (1990) Chipahua The Soul Survivors (1984) Batagraf Statements (2005) Trondheim Jazzorkester Stems and Cages (2010), med Kim Myhr Deltar på
Lava: Cruisin (1981) VG: På gang 4 (1981) Lava: Prime Time (1982) Kjell Larsen: Larsen (1982) Prima Vera: Ha ha he he ho! (De gærne har'e godt) (1982) Roger Nichols & Bruce Roberts: Songwriters For the Stars 3 (1982) VG: På gang 9 (1983) Norges Skøyteforbund: Heia Norge! (1983) Inger Lise Rypdal & Freddy Dahl: Elegi (1983) Pål Thowsen: Sympathy (1983) Anne-Marie Giørtz: Breaking Out (1983) Inger Lise Rypdal: Just For You (1983) Bent Patey: Ocean Front Walk (1983) VG: På gang 13 (1984) Inger Lise Rypdal: Vindar/Baby Boy (1984) Melodi Grand Prix 1984: Originalversjonene fra Norsk Grand Prix '84 (1984) Anne Grete Preus: Snart 17 (1984) Lava: Fire (1984) Håkon Iversen: One More Time/Someday (1985) Bang 85: The Further You Go (1985) Daniel: Lovin' That Rock'n'Roll (1985) Forente artister: Sammen for livet/Ikke gråt, Afrika (1985) Bulletin Records: Top of Bulletin (1985) Stage Dolls: Soldier's Gun (1985) Forente artister: Sammen for livet (1985) Lava: Prime Cuts (1985) Anne Marie Giørtz Band: Tigers of Pain (1985) Pål Thowsen: Call Me Stranger (1986) VG: På gang 27 (1987) Anne Grete Preus: Fullmåne (1988) Aids-Aid: Utenfor/Naken hud (1988) Dance with a Stranger: The Invisible Man/Little Woman (1989) Dance with a Stranger: The Invisible Man (1989) Jan Bang: Frozen Feelings (1989) Silje Nergaard: Does Anybody Care/Natt i Oslo (1989) Dance with a Stranger: To (1989) Ab und Zu: Ab und zu (1989) Jan Eggum: Da Capo (1990) Private Eye: Private Eye (1990) Work Funny Hours: Works Funny Hours (1991) Pål Thowsen & Tor Endresen: Collection (1992) Nuku: Det absolutte nullpunkt (1992) Leonard Cohen-hyllest: Hadde månen en søster – Cohen på norsk (1993) Bent Patey: Seven Years (1993) Dance with a Stranger: Only Love (1994) Stage Dolls: Stories We Could Tell (1994) Dance with a Stranger: Look What You've Done (1994) The Record Collection: Norske hits 1980–1989 – 38 pop & rock klassikere (1994) Jan Eggum: Mang slags kjærlighet (1994) Dance with a Stranger: Unplugged (1994) Musikkmagasinet Ballade: Rødt, blått & norsk (1995) Filmmusikk: Soundtrack From Eve's Daughters – A Film by Christina Olsson (1995) Vossa Jazz: Vossa Jazz XX (1996) Lava: The Very Best of Lava (1996) Kvitretten: Voices (1996) Bugge Wesseltoft: New Conception of Jazz (1996) Dennis González: Welcome to Us (1996) Django Bates: Good Evening...Here Is the News (1996) Elin Rosseland, Christian Wallumrød & Johannes Eick: Fra himmelen (1997) Krøyt: Sub (1997) Helge Iberg: Never Ending "West Side" Story (1997) Molde International Jazz Festival: All That Jazz and All That Business – Molde International Jazz Festival-CD 1997 (1997) Sony Music Special Products: Blåhvit97 (1997) Dance with a Stranger: The Best of Dance with a Stranger (1997) Jon Balke: Saturation (1998) Egmont Music Club: Det beste av norsk musikk 1981–1983 (1998) Bare Bra Musikk: Boxman – Norske Hits Volum 1 (1998) Bugge Wesseltoft: New Conception of Jazz: Sharing (1998) Anne Grete Preus: Mosaikk – 16 biter (1998) Carl Henrik Grøndahl: Jobs bok (1999) Bugge Wesseltoft: You Might Say (1999) Prima Vera: Prima Vera Show (1999) Zounds: Audio's Audiophile: Cover Me Vol. 9 (1999) Norsk jazzforum: Turnétilbud høsten 1999 (1999) Aurora: The Absolute Sound 1997 (1999) Krøyt: Low (1999) ACT: Magic Moments – The Ultimate ACT World Jazz Anthology Vol. IV (2000) Nils Petter Molvær: The Solid Ether Remixes Vol. 1 (2000) Universal Music/Sony Music: Woman (2000) 20/21 Music of Our Time: 2021 Klangwelt Moderne (2000) Jazzland: Jazzland Sampler 00: Future Jazz from Norway (2000) Trygve Seim: Different Rivers (2000) Nils Petter Molvær: Solid Ether (2000) Mind Over MIDI: Re-works (2000) Jazzland: Future Jazz from Norway (2001) Les Inrockuptibles: Une Rentrée Musiques 2001 (2001) Arne Garborg: Haugtussa (2001) Chillinuts: Reworks (2001) Mind Over MIDI: Project 3 (2001) Verve Records: Eternas II – The Best Jazz Vocals (2001) ACT: Global Magic: The Ultimate ACT World Jazz Anthology Vol. V (2001) Universal Music: Greetings from Oslo (2001) Universal Music: The Universe – Die CD zur Mitarbeiterzeitschrift (2001) Nils Petter Molvær: Recoloured (2001) Christof Lauer & Jens Thomas: Shadows In the Rain (2001) Warner Music: The Chillout Album Vol. 2: Soft Mixed (2001) Oslo Sinfonietta: Norges musikkhistorie – Bind 5 (2001) Rob Waring Trio: Synchronize Your Watches (2001) Nettwerk: Music for Dreams (2001) Universal Music: Mandarin – Wicked Wan Tan Tunes Volume 2 (2002) Matthew Herbert: Secondhand Sounds: Herbert Remixes (2002) Universal Music: Sonet Distribusjon: Sampler vår/sommer 2002 (2002) Verve Records: Festival International de Jazz de Montréal – Compilation 2002 (2002) Verve Records: Verve Today 2002 (2002) Universal Music/EmArcy: Jazzsommer 2002 (2002) North Sea Jazz Festival: Your Guide to the North Sea Jazz Festival 2002 (2002) Universal Music: Woman Jazz (2002) Late Junction: Nordic Nights: A Late Junction Compilation Vol. 2 (2002) Jazzland: Jazzland Remixed 2 (2002) Norsk jazzforum: Jazz From Norway 2002 – JazzCD.no 1th Set (2002) Nils Petter Molvær: NP3 (2002) Pål Thowsen: ...The Rest Is Rumours (2002) ACT: 10 Magic Years – The Best of ACT World Jazz 1992–2002 (2002) Universal Music: Parfum Noir Vol. 2 (2002) Les Inrockuptibles: Une Rentrée Musiques 2002 (2002) Jazzland: Jazzland Tracks 1996–2000 (2003) Steiger: Postcard From the Edge (2003) C+C Records: Tea Lounge Oslo – Aroma No. 1 (2003) Six Degrees Records: Torch: A Six Degrees Collection of Modern Torch Songs (2003) Music for Dreams: Luftkastellet (2003) Laurent Garnier: Excess Luggage (2003) ACT: Magic Voices (2003) Edel: The Finest In Female Vocal Jazz (2003) Sinedín Music/Jazzland: Vientos del Norte (2003) Lounge Records: Music For Modern Living 7 (2003) Susanna and the Magical Orchestra: List of Lights and Buoys (2004) Sonet: Sonet Distribusjon våren 2004 (2004) Bedrock Records: Layered Sounds (2004) Blue Shadow: Jazz Shadows Volume 01 (2004) Jazzland: Jazzland Sampler 2004 (2004) Jazzanova: Jazzanova...Mixing (2004) Chillinuts: Reworks: What Kind of Machine Is This? (2004) React: Real Ibiza VII – Set Adrift... (2004) Illumination: The Chilluminati Remixes (2004) Wagram: Electro Jazz Divas (2004) EMI: Chill Out 2 Edition (2004) Forente artister: Venn (2005) Wagram: Electro Jazz Divas Vol. 2 (2005) ACT: Magic Voices II (2005) Jazzland: Future Jazz from Norway: Jazzland Sampler (2005) Blue Shadow: Dreams & Visions (2005) Unidisc: Norsk musikk i 100 – Vol 7: Norsk på engelsk (2005) ACT: Magic Voices II (2005) Jan Eggum: 30/30 (2005) Ravi & DJ Løv: Den nye arbæidsdagn (2005) United Recordings: Blossom (2005) V2: Bertallosophie FFWD (2005) Pelham Power Productions: Nachtschicht Vol. 01 (2005) Inger Lise Rypdal: I mitt liv – Inger Lises 40 beste (2005) Filmmusikk: Prime – Original Motion Picture Soundtrack (2005) Jazzland: Jazzland Sampler 2005 (2005) Varèse Sarabande: Prime (2005) Ensemble Du Verre: Sing Me Something (2005) Nils Petter Molvær: Er (2005) Jazzland: Future Jazz From Norway: Jazzland Sampler (2005) Terje Isungset: Igloo (2006) Sena: Blue Lagoon Soundtrack (2006) Nils Petter Molvær: An American Compilation (2006) Punkt: Crime Scenes (2006) Music Export Norway: Norway – Electronica 2. Edition (2006) ACT: ACT: Magic Moments (2006) Norsk jazzforum: Jazz From Norway 2006 – JazzCD.no 2rd Set (2006) Sony BMG Music Entertainment: Do Not Disturb Vol. 1 (2007) Wagram: Nu Jazz Anthology – The Best of Nu Jazz (2007) Verve Records: Verve Today 2007 (2007) Verve Records: Jazz Club: Jazz Goes Hollywood (2007) Jazzland Community: Jazzland Community (2007) Dance with a Stranger: Everyone Needs a Friend… The Very Best of Dance with a Stranger (2007) Wagram: Saint-Germain-des-Prés Café Volume (2007) Boutique/Universal Music: Electro Jazz Lounge (2007) ACT: Magic Nordic Voices (2007) Nova Records: Reprise! When Jazz Meets Pop Volume 3 (2007) John Digweed: Top DJ's 1 – John Digweed Plays For Θέμα Christmas 2007 (2007) Jazz: The Blue Box of Jazz (2007) Speeq: Or (2008) Beady Belle: Belvedere (2008) Wighnomy Brothers: Metawuffmischfelge (2008) Das Mollsche Gesetz: Catalogue of Improvisation (2008) Prince-hyllest: Shockadelica – 50th Anniversary Tribute to the Artist Known as Prince (2008) BigCityBeats: Nassau Beach Club Ibiza (2008) Norsk jazzforum: Jazz From Norway 2008 – JazzCD.no 3rd Set (2008) Huntsville: Eco, Arches & Eras (2008) Bugge Wesseltoft: New Conceptions of Jazz Box (2008) Wagram: Saint-Germain-des-Prés Café Volume 10 (2008) Music Export Norway: Norway World and Traditional 2nd Edition (2008) Microcosmo Dischi: Sulle Rive del Tango (2008) Maria Pia De Vito & Songs From the Underground: Mind the Gap (2009) Boutique/Universal Music: Durchatmen: Musik aus nordischen Weiten (2009) Wagram: Jazz for Goodnight (2009) Oslo Jazzfestival: Music (2009) Crazy P: Later Compiled and Mixed by Crazy P (2009) Boutique/Universal Music: Chill-Out Jazz (2009)