| Song name | Writer | Studio Album | Year | Refs. |
| "1,320'" | Dave Mustaine | Endgame | 2009 | |
| "1000 Times Goodbye" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "13" | Dave Mustaine
Johnny K | Thirteen | 2010 | |
| "44 Minutes" | Dave Mustaine | Endgame | 2009 | |
| "502" | Dave Mustaine | So Far, So Good... So What! | 1988 | |
| "99 Ways to Die" | Dave Mustaine | The Beavis and Butt-head Experience | 1993 | |
| "A House Divided" | Dave Mustaine
Johnny K | Super Collider | 2013 | |
| "A Secret Place" | Dave Mustaine | Cryptic Writings | 1997 | |
| "A Tout le Monde" | Dave Mustaine | Youthanasia | 1994 | |
| "Addicted to Chaos" | Dave Mustaine | Youthanasia | 1994 | |
| "All [|I] Want" | Dave Mustaine | Super Collider | 2013 | |
| "Almost Honest" | Dave Mustaine
Marty Friedman | Cryptic Writings | 1997 | |
| "Amerikhastan" | Dave Mustaine | United Abominations | 2007 | |
| "Anarchy in the [|U].K." | Paul Cook
Steve Jones
John Lydon
Glen Matlock | So Far, So Good... So What! | 1988 | |
| "Angry Again" | Dave Mustaine | Last Action Hero: Music from the Original Motion Picture | 1993 | |
| "Another Bad Day" | Dave Mustaine
Teemu Mäntysaari | Megadeth | 2026 | |
| "Architecture of Aggression" | Dave Mustaine
David Ellefson | Countdown to Extinction | 1992 | |
| "Ashes in Your Mouth" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Countdown to Extinction | 1992 | |
| "Back in the Day" | Dave Mustaine | The System Has Failed | 2004 | |
| "Bad Omen" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "Beginning of Sorrow" | Dave Mustaine
David Ellefson
Chris Broderick | Super Collider | 2013 | |
| "Bite the Hand" | Dave Mustaine | Endgame | 2009 | |
| "Black Curtains" | Dave Mustaine
Marty Friedman | Youthanasia | 1994 | |
| "Black Swan" | Dave Mustaine | Thirteen | 2010 | |
| "Blackmail the Universe" | Dave Mustaine | The System Has Failed | 2004 | |
| "Blessed Are the Dead" | Dave Mustaine | United Abominations | 2007 | |
| "Blood of Heroes" | Dave Mustaine | Youthanasia | 1994 | |
| "Bloodlust" | Dave Mustaine
Teemu Mäntysaari
Mary Evelyn Clement | Megadeth | 2026 | |
| "Bodies" | Dave Mustaine | Endgame | 2009 | |
| "Breadline" | Dave Mustaine
Marty Friedman
Bud Prager | Risk | 1999 | |
| "Breakpoint" | Dave Mustaine
David Ellefson
Nick Menza | Super Mario Bros. | 1993 | |
| "Built for War" | Dave Mustaine
Chris Broderick
Shawn Drover | Super Collider | 2013 | |
| "Bullet to the Brain" | Dave Mustaine | Dystopia | 2016 | |
| "Burn!" | Dave Mustaine | Super Collider | 2013 | |
| "Burning Bridges" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Burnt Ice" | Dave Mustaine | United Abominations | 2007 | |
| "Captive Honour" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Countdown to Extinction | 1992 | |
| "Célebutante" | Dave Mustaine
Kiko Loureiro | The Sick, the Dying... and the Dead! | 2022 | |
| "Chosen Ones" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "Cold Sweat" | Phil Lynott
John Sykes | Super Collider | 2013 | |
| "Coming Home" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Conquer or Die!" | Dave Mustaine
Kiko Loureiro | Dystopia | 2016 | |
| "Countdown to Extinction" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Countdown to Extinction | 1992 | |
| "Crown of Worms" | Dave Mustaine
Sean Harris | Crown of Worms | 1994 | |
| "Crush 'Em" | Dave Mustaine
Marty Friedman
Brian Howe
Bud Prager | Risk | 1999 | |
| "Dance in the Rain" | Dave Mustaine | Super Collider | 2013 | |
| "Dawn Patrol" | Dave Mustaine
David Ellefson | Rust in Peace | 1990 | |
| "Deadly Nightshade" | Dave Mustaine | Thirteen | 2010 | |
| "Death from Within" | Dave Mustaine | Dystopia | 2016 | |
| "Delivering the Goods" | Rob Halford
K. K. Downing
Glenn Tipton | Delivering the Goods | 2022 | |
| "Devils Island" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "Diadems" | Dave Mustaine | Demon Knight | 1995 | |
| "Dialectic Chaos" | Dave Mustaine | Endgame | 2009 | |
| "Die Dead Enough" | Dave Mustaine | The System Has Failed | 2004 | |
| "Disconnect" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Dogs of Chernobyl" | Dave Mustaine
Kiko Loureiro
Tony Cmelak | The Sick, the Dying... and the Dead! | 2022 | |
| "Don't Turn Your Back..." | Dave Mustaine | Super Collider | 2013 | |
| "Dread and the Fugitive Mind" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Duke Nukem Theme" | Lee Jackson | Risk | 1999 | |
| "Dystopia" | Dave Mustaine | Dystopia | 2016 | |
| "Ecstasy" | Dave Mustaine
Marty Friedman | Risk | 1999 | |
| "Elysian Fields" | Dave Mustaine
David Ellefson | Youthanasia | 1994 | |
| "Endgame" | Dave Mustaine | Endgame | 2009 | |
| "Enter the Arena" | Dave Mustaine | Risk | 1999 | |
| "Family Tree" | Dave Mustaine
David Ellefson
Nick Menza | Youthanasia | 1994 | |
| "Fast Lane" | Dave Mustaine
Johnny K | Thirteen | 2010 | |
| "Fatal Illusion" | Dave Mustaine | Dystopia | 2016 | |
| "FFF" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Cryptic Writings | 1997 | |
| "Five Magics" | Dave Mustaine | Rust in Peace | 1990 | |
| "Foreclosure of a Dream" | Dave Mustaine
David Ellefson | Countdown to Extinction | 1992 | |
| "Foreign Policy" | Lee Ving | Dystopia | 2016 | |
| "Forget to Remember" | Dave Mustaine | Super Collider | 2013 | |
| "Gears of War" | Dave Mustaine | United Abominations | 2007 | |
| "Go to Hell" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Bill & Ted's Bogus Journey: Music from the Motion Picture | 1991 | |
| "Good Mourning/Black Friday" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "Guns, Drugs and Money" | Dave Mustaine
Johnny K | Thirteen | 2010 | |
| "Hangar 18" | Dave Mustaine | Rust in Peace | 1990 | |
| "Have Cool, Will Travel" | Dave Mustaine | Cryptic Writings | 1997 | |
| "Head Crusher" | Dave Mustaine
Shawn Drover | Endgame | 2009 | |
| "Hey, God?!" | Dave Mustaine
Teemu Mäntysaari | Megadeth | 2026 | |
| "High Speed Dirt" | Dave Mustaine
David Ellefson | Countdown to Extinction | 1992 | |
| "Holy Wars... The Punishment Due" | Dave Mustaine | Rust in Peace | 1990 | |
| "Hook in Mouth" | Dave Mustaine
David Ellefson | So Far, So Good... So What! | 1988 | |
| "How the Story Ends" | Dave Mustaine | Endgame | 2009 | |
| "I Ain't Superstitious" | Willie Dixon | Peace Sells... but Who's Buying? | 1986 | |
| "I Am War" | Dave Mustaine
Teemu Mäntysaari
James Lomenzo | Megadeth | 2026 | |
| "I Don't Care" | Dave Mustaine | Megadeth | 2025 | |
| "I Know Jack" | Dave Mustaine | The System Has Failed | 2004 | |
| "I Thought I Knew It All" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Youthanasia | 1994 | |
| "I'll Be There" | Dave Mustaine
Marty Friedman
Bud Prager | Risk | 1999 | |
| "I'll Get Even" | Dave Mustaine
David Ellefson
Marty Friedman
Brian Howe | Cryptic Writings | 1997 | |
| "In My Darkest Hour" | Dave Mustaine
David Ellefson | So Far, So Good... So What! | 1988 | |
| "Insomnia" | Dave Mustaine | Risk | 1999 | |
| "Into the Lungs of Hell" | Dave Mustaine | So Far, So Good... So What! | 1988 | |
| "It's Electric" | Sean Harris
Brian Tatler | Warchest | 2007 | |
| "Junkie" | Dave Mustaine | The Sick, the Dying... and the Dead! | 2022 | |
| "Kick the Chair" | Dave Mustaine | The System Has Failed | 2004 | |
| "Kill the King" | Dave Mustaine | Capitol Punishment: The Megadeth Years | 2000 | |
| "Killing Is My Business... and Business Is Good!" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "Killing Time" | Dave Mustaine
Kiko Loureiro | The Sick, the Dying... and the Dead! | 2022 | |
| "Kingmaker" | Dave Mustaine
David Ellefson | Super Collider | 2013 | |
| "Last Dying Wish" | Dave Mustaine | Dystopia | 2016 | |
| "Last Rites/Loved to Death" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "Let There Be Shred" | Dave Mustaine
Teemu Mäntysaari
Dirk Verbeuren | Megadeth | 2025 | |
| "Liar" | Dave Mustaine
David Ellefson | So Far, So Good... So What! | 1988 | |
| "Life in Hell" | Dave Mustaine
Dirk Verbeuren | The Sick, the Dying... and the Dead! | 2022 | |
| "Look Who's Talking" | Dave Mustaine | Dystopia | 2016 | |
| "Looking Down the Cross" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "Losing My Senses" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Lucretia" | Dave Mustaine
David Ellefson | Rust in Peace | 1990 | |
| "Lying in State" | Dave Mustaine | Dystopia | 2016 | |
| "Made To Kill" | Dave Mustaine
Teemu Mäntysaari
Dirk Verbeuren
James Lomenzo | Megadeth | 2026 | |
| "Mary Jane" | Dave Mustaine
David Ellefson | So Far, So Good... So What! | 1988 | |
| "Mastermind" | Dave Mustaine | Cryptic Writings | 1997 | |
| "Me Hate You" | Dave Mustaine | Dystopia | 2016 | |
| "Mechanix" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "Melt the Ice Away" | Tony Bourge
Burke Shelley | Dystopia | 2016 | |
| "Millennium of the Blind" | Dave Mustaine
Marty Friedman
Johnny K | Thirteen | 2010 | |
| "Mission to Mars" | Dave Mustaine
Kiko Loureiro | The Sick, the Dying... and the Dead! | 2022 | |
| "Moto Psycho" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "My Creation" | Dave Mustaine
Nick Menza | Rust in Peace | 2004 | |
| "My Kingdom" | Dave Mustaine | The System Has Failed | 2004 | |
| "My Last Words" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "Never Dead" | Dave Mustaine | Thirteen | 2010 | |
| "Never Say Die" | Geezer Butler
Tony Iommi
Ozzy Osbourne
Bill Ward | Nativity in Black II | 2000 | |
| "Never Walk Alone... A Call to Arms" | Dave Mustaine
Glen Drover | United Abominations | 2007 | |
| "New World Order" | Dave Mustaine
David Ellefson
Marty Friedman
Nick Menza | Thirteen | 2010 | |
| "Night Stalkers" | Dave Mustaine
Kiko Loureiro
Dirk Verbeuren | The Sick, the Dying... and the Dead! | 2022 | |
| "No More Mr. Nice Guy" | Alice Cooper
Michael Bruce | Wes Craven's Shocker - No More Mr. Nice Guy - The Music | 1989 | |
| "Nobody's Hero" | Dave Mustaine
Chris Rakestraw | Megadeth | 2026 | |
| "Obey the Call" | Dave Mustaine
Teemu Mäntysaari
Dirk Verbeuren
Chris Rakestraw | Megadeth | 2026 | |
| "Of Mice and Men" | Dave Mustaine | The System Has Failed | 2004 | |
| "Off the Edge" | Dave Mustaine | Super Collider | 2013 | |
| "One Thing" | Dave Mustaine | Cryptic Writings | 1997 | |
| "Out on the Tiles" | John Bonham
Jimmy Page
Robert Plant | United Abominations | 2007 | |
| "Peace Sells" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "Paranoid" | Geezer Butler
Tony Iommi
Ozzy Osbourne
Bill Ward | Nativity in Black | 1994 | |
| "Play for Blood" | Dave Mustaine | United Abominations | 2007 | |
| "Poison Was the Cure" | Dave Mustaine | Rust in Peace | 1990 | |
| "Poisonous Shadows" | Dave Mustaine
Kiko Loureiro | Dystopia | 2016 | |
| "Police Truck" | Jello Biafra
East Bay Ray | The Sick, the Dying... and the Dead! | 2022 | |
| "Post American World" | Dave Mustaine
Kiko Loureiro | Dystopia | 2016 | |
| "Prince of Darkness" | Dave Mustaine
Marty Friedman | Risk | 1999 | |
| "Problems" | Paul Cook
Steve Jones
John Lydon
Glen Matlock | A Tout Le Monde (Single) | 1995 | |
| "Promises" | Dave Mustaine
Al Pitrelli | The World Needs a Hero | 2001 | |
| "Psychopathy" | Dave Mustaine
Kiko Loureiro | The Sick, the Dying... and the Dead! | 2022 | |
| "Psychotron" | Dave Mustaine | Countdown to Extinction | 1992 | |
| "Public Enemy No. 1" | Dave Mustaine
Johnny K | Thirteen | 2010 | |
| "Puppet Parade" | Dave Mustaine
Teemu Mäntysaari
Dirk Verbeuren
Chris Rakestraw | Megadeth | 2026 | |
| "Rattlehead" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "Recipe for Hate... Warhorse" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Reckoning Day" | Dave Mustaine
David Ellefson
Marty Friedman | Youthanasia | 1994 | |
| "Return to Hangar" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Ride the Lightning" | James Hetfield
Lars Ulrich
Cliff Burton
Dave Mustaine | Megadeth | 2026 | |
| "Rust in Peace... Polaris" | Dave Mustaine | Rust in Peace | 1990 | |
| "Sacrifice" | Dave Mustaine
Kiko Loureiro | The Sick, the Dying... and the Dead! | 2022 | |
| "Set the World Afire" | Dave Mustaine | So Far, So Good... So What! | 1988 | |
| "Seven" | Dave Mustaine
David Ellefson | Risk | 1999 | |
| "Shadow of Deth" | Dave Mustaine | The System Has Failed | 2004 | |
| "She-Wolf" | Dave Mustaine | Cryptic Writings | 1997 | |
| "Silent Scorn" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Sin" | Dave Mustaine
David Ellefson
Nick Menza | Cryptic Writings | 1997 | |
| "Skin o' My Teeth" | Dave Mustaine | Countdown to Extinction | 1992 | |
| "Sleepwalker" | Dave Mustaine | United Abominations | 2007 | |
| "Soldier On!" | Dave Mustaine | The Sick, the Dying... and the Dead! | 2022 | |
| "Something That I'm Not" | Dave Mustaine | The System Has Failed | 2004 | |
| "Strange Ways" | Ace Frehley | Warchest | 2007 | |
| "Sudden Death" | Dave Mustaine | Thirteen | 2010 | |
| "Super Collider" | Dave Mustaine | Super Collider | 2013 | |
| "Sweating Bullets" | Dave Mustaine | Countdown to Extinction | 1992 | |
| "Symphony of Destruction" | Dave Mustaine | Countdown to Extinction | 1992 | |
| "Take No Prisoners" | Dave Mustaine | Rust in Peace | 1990 | |
| "Tears in a Vial" | Dave Mustaine | The System Has Failed | 2004 | |
| "The Blackest Crow" | Dave Mustaine | Super Collider | 2013 | |
| "The Conjuring" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "The Creed" | Dave Mustaine | The Craving | 2004 | |
| "The Disintegrators" | Dave Mustaine | Cryptic Writings | 1997 | |
| "The Doctor Is Calling" | Dave Mustaine
Marty Friedman
Bud Prager | Risk | 1999 | |
| "The Emperor" | Dave Mustaine | Dystopia | 2016 | |
| "The Hardest Part of Letting Go... Sealed with a Kiss" | Dave Mustaine
Chris Broderick | Endgame | 2009 | |
| "The Killing Road" | Dave Mustaine | Youthanasia | 1994 | |
| "The Last Note" | Dave Mustaine
Teemu Mäntysaari | Megadeth | 2026 | |
| "The Right to Go Insane" | Dave Mustaine | Endgame | 2009 | |
| "The Scorpion" | Dave Mustaine | The System Has Failed | 2004 | |
| "The Sick, the Dying... and the Dead!" | Dave Mustaine | The Sick, the Dying... and the Dead! | 2022 | |
| "The Skull Beneath the Skin" | Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "The Threat Is Real" | Dave Mustaine | Dystopia | 2016 | |
| "The World Needs a Hero" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "These Boots" | Lee Hazlewood
Dave Mustaine | Killing Is My Business... and Business Is Good! | 1985 | |
| "This Day We Fight!" | Dave Mustaine | Endgame | 2009 | |
| "This Planet's on Fire " | Sammy Hagar | The Sick, the Dying... and the Dead! | 2022 | |
| "This Was My Life" | Dave Mustaine | Countdown to Extinction | 1992 | |
| "Time: The Beginning" | Dave Mustaine
David Ellefson | Risk | 1999 | |
| "Time: The End" | Dave Mustaine | Risk | 1999 | |
| "Tipping Point" | Dave Mustaine
Teemu Mäntysaari
John Clement | Megadeth | 2025 | |
| "Tornado of Souls" | Dave Mustaine
David Ellefson | Rust in Peace | 1990 | |
| "Train of Consequences" | Dave Mustaine | Youthanasia | 1994 | |
| "Trust" | Dave Mustaine
Marty Friedman | Cryptic Writings | 1997 | |
| "Truth Be Told" | Dave Mustaine | The System Has Failed | 2004 | |
| "United Abominations" | Dave Mustaine | United Abominations | 2007 | |
| "Use the Man" | Dave Mustaine
Marty Friedman | Cryptic Writings | 1997 | |
| "Victory" | Dave Mustaine | Youthanasia | 1994 | |
| "Vortex" | Dave Mustaine | Cryptic Writings | 1997 | |
| "Wake Up Dead" | Dave Mustaine | Peace Sells... but Who's Buying? | 1986 | |
| "Wanderlust" | Dave Mustaine
Marty Friedman | Risk | 1999 | |
| "Washington Is Next!" | Dave Mustaine | United Abominations | 2007 | |
| "We the People" | Dave Mustaine
Johnny K | Thirteen | 2010 | |
| "We'll Be Back" | Dave Mustaine
Kiko Loureiro | The Sick, the Dying... and the Dead! | 2022 | |
| "When" | Dave Mustaine | The World Needs a Hero | 2001 | |
| "Whose Life (Is It Anyways?)" | Dave Mustaine | Thirteen | 2010 | |
| "Wrecker" | Dave Mustaine | Thirteen | 2010 | |
| "X-Games Theme" | | - | 1997 | |
| "You're Dead" | Dave Mustaine | United Abominations | 2007 | |
| "Youthanasia" | Dave Mustaine | Youthanasia | 1994 | |