- Sugar (Demo Tape 4)
- Sugar (Live at Irving Plaza, NYC, NY - January 1999)
- Sugar (Lowlands Festival 2001)
- Suite-Pee (Demo Tape 1)
- Suite-Pee (Demo Tape 4)
- Suite-Pee (Live at Irving Plaza, NYC, NY - January 1999)
- Suite-Pee (live at the Filmore Theater)
- System of a Down Thanks prod. by Daron Malakian, Rick Rubin & Serj Tankian
- The Missing Song
- Therapy prod. by Daron Malakian & Rick Rubin
- Tired In Living In The World
- Toxicity (100 gecs remix) [Mixed] prod. by Daron Malakian, Dylan Brady, Laura Les, Rick Rubin & Serj Tankian
- Toxicity (Hurdy Gurdy Cover) by Michalina Malisz
- Toxicity (Live)
- Waiting for You (Version 1) prod. by Daron Malakian & Rick Rubin
- Waiting for You (Version 2) prod. by Daron Malakian & Rick Rubin
- Wake (Intro) by Cosmic Latte (Ft. Evanescence, Linkin Park, Michael Jackson & Toby Fox)
- Want Me to Try prod. by Daron Malakian & Rick Rubin
- War? (Clean Live Version)